On April 10, 2020, the president issued a new memorandum, Memorandum on Visa Sanctions, focused on
immigration compliance measures and enforcement. This new
memorandum instructs the secretary of homeland security to notify
the secretary of state if any government of a foreign country
"denies or unreasonably delays the acceptance of aliens who
are citizens, subjects, nationals, or residents of that country
after being asked to accept those aliens, and if such denial or
delay is impeding operations of the Department of Homeland Security
necessary to respond to the ongoing pandemic caused by
SARS-CoV-2." This is relevant as many countries have closed
their borders completely, barring even their own citizens from
returning at the moment.