Firm Profile > Diaz Reus International Law Firm & Alliance > Miami, United States

Diaz Reus International Law Firm & Alliance
United States

International litigation Tier 3

Diaz Reus International Law Firm & Alliance is a go-to name for disputes between US and Latin American clients. Based in Miami, the team is jointly led by Michael Diaz Jr.Gary Davidson and Brant Hadaway, and handles a range of cross-border disputes with multi-jurisdictional elements and parallel proceedings, including those involving state-owned entities or sovereign representatives. The group counts commercial litigation, financial fraud, sovereign immunity issues, asset recovery cases and construction disputes among its areas of expertise. Roland Potts is is recommended in particular for construction disputes, while Marta Colomar-Garcia is a name to note for general corporate and commercial disputes. The team also handles international criminal work, particularly with a focus on regulatory and money laundering requirements; Diaz Jr. is stands out in this regard, as does associate Javier Coronado Diaz, who splits his time between Colombia and Miami.

Practice head(s):

Michael Diaz Jr.; Gary Davidson; Brant Hadaway

Other key lawyers:

Marta Colomar-Garcial; Roland Potts; Javier Coronado

Key clients

DRI Mortgage and DRI Capital Fund

Nestor Colon

Ruben Idler

Rosita Gomar

Eddy Salloum

Zev Supplies Corp.

Warren Barthes (individual) and Good Investments, SARL

Certain commercial defendants in Luxottica Group S.p.A. & Oakley, Inc. vs. The Partnerships, et al.

Certain commercial defendants in Ouyeinc Ltd. vs. The Partnerships, et al.

Midway Labs USA, LLC; Midway Tecnologia de Alimentos, LTDA.; Wilton Colle; and Catherine Colle

TCB Advisors, LLC, Inversiones Mirko, Hector Luis Hulian Garcia, Angel Franciso Bernardo Ugueto Otanez, Alberto Jose Sanchez Martinez

Corporate investigations and white-collar criminal defense

With particular strength in representing high-profile individuals from Latin American countries, Miami-based Diaz Reus International Law Firm & Alliance counts government officials and senior executives among its impressive client base. Its varied case history includes the defense of corruption, bribery, and money laundering; national security claims; RICO and FCPA matters; and other issues arising from alleged transnational crime. The firm’s wide-ranging expertise also includes asset identification, location, tracing, repatriation, and recovery. Michael Diaz has a network of noteworthy contacts across South America, which generates a strong body of work relating to public corruption and white-collar crime. Also recommended is Robert Targ, who has been active in asset seizure, forfeiture, and global money laundering issues.

Practice head(s):

Michael Diaz; Robert Targ

Other key lawyers:

Richard Wiedis; Greg Ahlgren; Juan Vargas; Marta Colomar-Garcia


‘They are extremely professional, they have a complete understanding of the legal procedures and the best routes to be followed to achieve the appropriate solution to the demands’. 

‘Their performance is excellent’.

‘Their strength is in their attorneys’ knowledge and professionalism’.

‘They are highly trained and experienced lawyers, with exceptional analytical ability; they go directly to the important points of problems, have great bargaining power and a thorough knowledge of the laws’.

‘They have the capability to adapt to any circumstances’.

‘Clever, resourceful and successful in litigation and arbitration’.

‘Each lawyer masters his area and expertise very well, and comes together with others generating excellent results’.

‘They have a very solid reputation among their peers and general stakeholders, making it easier to navigate the complexities of the law’.

Key clients

Prakazrel Michel

Amir Nassar

Hector Nuñez

Edoardo Orsoni

Rafael Cedeno

Chris Barkovic

Jose “Pepe” Leggio

Peter Karam

Latin America: International firms > Compliance and investigations Tier 3

The Miami-headquartered Diaz Reus International Law Firm & Alliance is highly rated for white-collar crime, financial fraud and FCPA investigations, and is particularly noted for its experience in money-laundering and OFAC violation investigations. The firm frequently acts for foreign governments, state-owned enterprises and public officials. It also routinely helps clients avoid criminal indictments and has a history of negotiating with US law enforcement agencies; this includes pre-indictment resolution strategies in criminal investigations by the US Attorney’s Office in Miami, New York and Houston, and the US Department of Justice and its law enforcement agencies. Global managing partner Michael Diaz is a prominent name in the sector, as is Robert Targ. Of counsel Juan Vargas and administrative managing partner Marta Colomar-Garcia are also notable names. All are based in Miami.

Practice head(s):


They are extremely professional, they have the complete understanding about the legal procedures and the best routes to be followed to achieve the appropriate solution to the demands.

Their performance is excellent. Their strength is in their attorneys’ knowledge, professionalism and the administrative staff.

Michael Diaz, Robert Targ and Juan Varga are highly trained and experienced lawyers, with an exceptional analytical ability. They go directly to the important points, have great bargaining power, and thorough knowledge of the laws and the paths to be followed to find the solution to the problem.

Michael Diaz, like the rest of his team, is extremely fair, human, identifies with the client’s situation, and works hard without limits to achieve convincing results in the cases.

Key clients

Domenico Crugnale

Samy Morgenstern

Alvaro Saenz (Unimark)

Cerveceria Centro Americana

Gilson Ribeiro

Eduardo Iglesias

Edwin Torres

Luis Ranauro

Julio Cuesta

Latin America: International firms > International arbitration > International arbitration Tier 5

Based in Miami, Diaz Reus International Law Firm & Alliance is praised for its 'versatility' and 'efficiency' in  arbitral disputes in sectors ranging from banking and finance, to construction and intellectual property. Michael Diaz, Jr, Gary Davidson and Brant Hadaway co-lead the international arbitration branch, with clients recognising their 'extensive experience and success rate' when handling commercial cases – which often involve state-level opposition - on behalf of holding companies or high-net-worth individuals. In a recent work highlight, the team acted for Qatar-registered contractor Western Building Group regarding service-agreement issues related to the South Terminal expansion project at Panama City's Tocumen International Airport. Hadaway and Diaz, Jr also represented Midway Labs before an ICDR tribunal, following allegations of personal contract breaches and tort claims by a high-profile Brazilian soccer player. Roland Potts handles arbitral and appellate matters, particularly in relation to construction defects, product liability and breach of contract claims.


The performance of Dr Michael Diaz Jr and that of his team is simply spectacular, the coordination, the treatment of his clients in a professional and ethical way makes them position themselves in the excellence of the results obtained in favor of their clients.

Unquestionably its knowledge, professionalism, and treatment of clients make the difference over other competitors. It is important to highlight the excellent leadership of Michael Diaz, Martha Colomar and Gary E Davidson.

Adaptable to customer needs. Understands the realities and situations of each country applicable to the case. Willingness to work as a team with the internal lawyers and factual or legal experts necessary to structure the case. Their extensive experience and success rate in handling arbitration results in a reliable strategy.

Versatility. Teamwork with in-house attorneys and experts. Knowledge of the different systems of law and especially the continental system (civil code) and also perfect linguistic command. It has lawyers with different backgrounds and international training. Effectiveness and efficiency – relative to the value of fees and expenses in relation to the results achieved. Excellent relation of price/value/results. 24-hour availability.

Key clients

Western Building Group

Midway Labs

Vanina Vara

Humberto Araque Tamayo (v Bayside)


Latin America: International firms > City focus: Miami

Diaz Reus International Law Firm & Alliance has a phenomenal presence in white-collar crime and FCPA investigations. It has a rich track record in financial fraud, international asset recovery, anti-money laundering, and OFAC compliance. In addition, the firm is achieving further growth in immigration and Latin America corporate transactions, especially those involving large family-owned businesses. Key markets include Mexico, Colombia, Brazil, Venezuela, Guatemala and Honduras. It is well known for representing foreign governments, state-owned enterprises, public officials, financial institutions, multinationals and high net worth individuals. It has a fine record in handling and avoiding criminal indictments and negotiating with US law enforcement agencies; this includes in relation to Latin American jurisdictions that are perceived to be national security threats to the US. Moreover, the firm is making a significant impression in international arbitration involving Latin American entities. Global managing partner Michael Diaz has an outstanding reputation in FCPA and OFAC cases, financial fraud investigations, asset-tracing and general white-collar crime matters. Founding partner Robert Targ is also highly reputed for white-collar crime and investigations, while Gary Davidson is the key partner for international arbitrations. Marta Colomar-Garcia is also has a growing practice in Latin America litigation and arbitration.

Practice head(s):

Key clients

Midway Labs

Midway Labs-EXICON

Ruben Idler

TCB Advisors / Inversiones Mirko

Humberto Araque Tamayo


Victor Planchart

Warren Barthes

Domenico Crugnale

Alvaro Saenz (Unimark)

Firm overview:

Miami-headquartered Diaz Reus is a global legal practice focused on national and international parallel proceedings and business transactions in the following broad areas, with Board Certified lawyers in International Litigation and Arbitration, International Law, and Immigration & Nationality Law:
  • Fraud, civil litigation and arbitration
  • White collar crime, regulatory, criminal investigations and defense in matters of corruption, bribery, money laundering, Foreign Corrupt Practices Act, OFAC, Magnitsky Act, CAATSA, Specially Designated Nationals, the Bank Secrecy Act and other US law violations
  • Asset investigations, identification, location, tracing, and recovery
  • Politically sensitive investigations and the recovery of US immigration status and visas
  • Corporate / M&A
  • Real Estate
  • Sports and entertainment law
  • Immigration, tax and estate, family law
  • Sovereign trade, commerce, banking, real estate, intellectual property, capital markets, and finance
  • Corporate/financial institutions, governance and compliance
  • Blockchain and cryptocurrency

Diaz Reus serves US-based and global clients, including multinational corporations, import and export companies, manufacturers, technology companies, government entities, heads of states, political parties, public officials, financial institutions, entrepreneurs, family offices, high net worth individuals, and athletes and entertainers. Diaz Reus is an entrepreneurial, enterprising, emerging-markets law firm providing traditional legal services across all industries while focusing on promising new business opportunities for its clients. The firm is dedicated to growing and protecting its clients’ assets and securing their long-term stability. From twenty-seven offices located throughout Latin America, the US, Western and Eastern Europe, Asia, Africa and the Middle East, our multicultural lawyers operate seamlessly, giving clients access to boots-on-the-ground, global legal counsel.

Main areas of practice:

High-stakes litigation and arbitration: Transnational litigation, arbitration, and appellate matters including commercial disputes, sensitive investigations, financial fraud, asset seizure and forfeiture, white collar criminal, asset recoveries, international law, intellectual property rights, and recovery of visas.

Transactional: Complex contract negotiations, finance, real estate, IP licensing, joint ventures, cross-border mergers and acquisitions, capital markets, customs, trade, and franchising.

Regulatory: Anti-money laundering compliance, BSA, corporate governance, regulatory investigations, FCPA, customs, and criminal and civil RICO cases. Representing banks, corporations, traditional and non-traditional financial institutions, sovereigns, political parties, government entities and officials, and private individuals.

Private client: Domestic and international tax, athlete, and entertainer representation. Immigration, trust and estate, and family law matters.

Representative litigation and arbitration matters

  • Represent holdout group of bondholders in $700m Argentinean government default
  • Represent US citizen/Venezuelan national in defense of a federal criminal investigation in the Southern District of Florida (Miami) involving allegations of unlicensed money transmitting and money laundering
  • Represent group of US auto dealerships in breach of agreements in importation and sale against Indian truck manufacturer. Claims include fraud, negligent misrepresentation, fraudulent inducement, unjust enrichment, civil conspiracy, and violations of the federal automobile dealers Act and state ‘dealer day in court’ laws
  • Represent head of political party in lawsuit for defamation against The Wall Street Journal
  • Represent Latin American, Chinese, and Middle Eastern nationals in recovery of US Visas, following investigations for human rights violations and corruption
  • Represent Venezuelan government agency in lawsuit alleging expropriated property in excess of $1bn, violating the US Foreign Sovereign Immunities Act
  • Arbitration of dispute in Panama between US company and Brazilian general contractor engaged in construction of airport
  • Represent parties allegedly defrauded of equal shares in joint venture to sell power-generating turbines to Venezuelan electricity sector. Includes allegations of fraudulent transfer, an out of state trust, an affiliated company in Panama, and US law enforcement investigations
  • Represented Mexican oil giant, PEMEX, in multimillion-dollar action under federal RICO, involving complex extraterritoriality issues
  • Represented US-multinational corporation victimized by fraudulent acts during government bid process in Peru
  • Represented Central American commodities enterprise in dispute with US-based supplier regarding cross-border shipment of goods under CAFTA-DR
  • Arbitrated commercial dispute in purchase and sale contract transferring airplanes from Central to South American airlines, ultimately sold to a third-party airline in Dubai
  • Represented iron/ore producer in defense of arbitration dispute for maritime vessel and iron/ore contracts in London, Zurich, Miami, and New York
  • Represent prominent, wealthy Honduran family and their business empire against money laundering charges and OFAC designations in federal court in New York City

Global managing partner: Michael Diaz, Jr
Number of partners: 56
Number of lawyers: 60

Offices inUSA: Miami, Florida; Washington, D.C.; Los Angeles, California; New York, New York; Houston, Texas. Canada: Toronto. Latin America: Bogota, Colombia; Buenos Aires, Argentina; Caracas, Venezuela; Lima, Peru; Mexico City, Mexico; Monterrey, Mexico; Panama, Republic of Panama; San Pedro Sula, Honduras; Santiago, Chile; Santo Domingo, DR; Sao Paulo, Brasil; Guatemala, Guatemala. EuropeFrankfurt, Germany; Madrid, Spain; Prague, Czech Republic; Moscow, Russia. Middle East / AsiaAbu Dhabi, United Arab Emirates; Dubai, United Arab Emirates; Riyadh, Saudi Arabia; Lahore, Pakistan; Shanghai, China. Beirut, Lebanon; Baghdad, Iraq. Africa: Johannesburg, South Africa; Lagos, Nigeria.

Languages: Arabic, Catalan, Czech, English, Farsi, French, German, Hindi, Italian, Mandarin Chinese, Portuguese, Russian, Shanghainese, Spanish

Department Name Email Telephone
OFAC Sanctions, Corporate investigations and white collar criminal Michael Diaz, Jr. +1 877.247.9277
OFAC Sanctions, Corporate investigations and white collar criminal Robert I. Targ +1 877.247.9277
International litigation and arbitration Marta Colomar-Garcia +1 877.247.9277
International litigation and arbitration Gary E. Davidson +1 877.247.9277
International arbitration Michael Diaz, Jr. +1 877.247.9277
International litigation and arbitration Roland Potts +1 877.247.9277
White Collar criminal defense Richard Wiedis +1 877.247.9277
Immigration Michael A. Harris +1 877.247.9277
Real estate George Diaz +1 877.247.9277
Sports and entertainment Ahmand R. Johnson +1 877.247.9277
Litigation, Entertainment Kenneth A. Linzer +1 877.247.9277
Tax planning and estates Julio Barbosa +1 877.247.9277
Tax planning and estates Steve Horowitz +1 877.247.9277
White collar criminal defense Juan Vargas +1 877.247.9277
Civil & Criminal Litigation Greg Ahlgren +1 877.247.9277
Photo Name Position Profile
 Greg Ahlgren  photo Greg Ahlgren Partner
 Marcela Blanco  photo Marcela Blanco Partner, Head of the Bogota office
Ms Marta Colomar-Garcia  photo Ms Marta Colomar-Garcia Administrative Managing Partner
 Javier Coronado Diaz  photo Javier Coronado Diaz Partner
 Gary Davidson  photo Gary Davidson Partner
 George Diaz photo George Diaz Partner
 Michael Diaz, Jr.  photo Michael Diaz, Jr. Global Managing Partner
 Roland Potts  photo Roland Potts Partner
Mr Robert Targ  photo Mr Robert Targ Founding Partner
 Juan Vargas  photo Juan Vargas Of Counsel
 Richard Wiedis  photo Richard Wiedis Partner

Latin America

2020 Business Law Trends in Latin America

The pandemic has triggered the most profound humanitarian, health, and economic crisis the region has faced in a century. The evolving regulatory landscape, owing to ongoing efforts to confront COVID-19 and protect public health and safety, creates a broad range of novel legal concerns for businesses in Latin America (“LATAM”).

Making the Best of the Fiscal Panorama

While regional governments continue to focus on ensuring that the health sector has enough resources to protect the public, there is also growing concern about preserving jobs and production capacity through liquidity mechanisms for companies, particularly small and medium-sized enterprises. To that end, countries in the region have implemented targeted fiscal policies related to public spending, tax revenues and liquidity distribution, including giving tax relief to businesses, credit guarantees and loans to the private sector, as well as providing additional capital to public financial institutions and making investments to reactivate infrastructure projects.

Accordingly, companies with operations in LATAM should keep up with tax reforms and how they will alter current tax structures. Companies should also review tax incentive programs, and take advantage of any opportunities for reducing their tax burden.

Changes in the Employment Landscape

There is also a growing concern among governments about the pandemic’s impact on the work environment. Colombia, Brazil, and Peru, among others, have issued additional regulations regarding teleworking arrangements to secure the health and safety of the home workplace, compliance with working hour and rest time requirements, and allocation of incremental work-related expenses. Argentina, Panama, Costa Rica, Brazil, and Mexico have also declared states of emergency, giving companies increased flexibility to change working conditions or suspend employment contracts. El Salvador, Peru, Chile, Argentina, and several other LATAM countries have created programs to support workers’ incomes, including benefits and subsidies that companies can request on behalf of employees, and providing direct coverage of companies’ payrolls during the economic crisis.

Additionally, concerns about employees’ privacy rights have come to the forefront, as more LATAM businesses have been forced to operate remotely during the COVID-19 pandemic. The notion that individuals have a fundamental right to privacy, especially in their home, and that they should be able to control personal information disseminated in public or private databases (habeas data) is one of the core elements of a number of national constitutions in the region. Unsurprisingly, companies from several LATAM jurisdictions must notify employees of any methods used to remotely monitor their activities, and grant them access to any information gathered from them as part of such remote monitoring.

Increase in Commercial Litigation and Arbitration

With many micro, small and mid-sized enterprises in the region facing insolvency, the pandemic has exacerbated commercial litigation, including litigation over how to allocate risks of, and damages caused by business disruption and the nonperformance of contractual obligations. In LATAM, these disputes often involve determining whether COVID-19 or its economic and regulatory impacts constitute events that the parties can neither reasonably anticipate nor control, and which prevent one or more parties from performing obligations under the contract. This is because most judicial systems in the region provide for possible defenses in such circumstances under doctrines of force majeure, impossibility (hardship), impracticality, fortuitous event, and/or frustration of purpose.

The coronavirus outbreak is also likely to boost arbitration in LATAM, since certain governmental measures during COVID-19 may give rise to claims under bilateral or multilateral investment treaties. Policies such as increasing and tightening foreign investments screening in certain sectors of the economy (e.g., security, defense, health and infrastructure) may be deemed in breach of treaty protocols such as the fair and equitable treatment and most favored nation standards, or prohibitions against state expropriation of private property without compensation.

Against this backdrop, impacted parties in the region should carefully analyze their legal rights and obligations under the specific terms of existing commercial agreements, financing instruments, and insurance policies. Companies currently negotiating commercial agreements in the region should also prioritize questions concerning the appropriate allocations of risks resulting from the coronavirus outbreak.

New Dynamics in the Real Estate Market

The real estate market in LATAM has taken a substantial hit, under the headwinds of a broad regional economic slowdown and exacerbated investor uncertainty. Nevertheless, in countries such as Peru, Mexico and Colombia. the pandemic has stimulated demand for real estate with outdoor space, resulting from lockdown policies and a shift towards remote working. The pandemic is also accelerating the adoption of new digital technologies in the real estate industry, such as online platforms to connect parties to real estate transactions, and is boosting competition among mortgage lenders. Legislators in the region have been called to update their laws relating to commercial leases and utilities to adopt to a new reality.