President Trump has repeatedly cited terror threats as a reason to end both a visa lottery for immigrants and a program that allows citizens to sponsor close relatives to migrate to the U.S. But his administration has struggled to make a link, and he repeatedly falsely describes both programs.

An undetermined number of longtime U.S. residents have been stranded overseas as a result of President Trump's executive order temporarily blocking visas from seven countries in the Middle East and North Africa.  All visa holders from those seven countries are now barred entry to the U.S., including lawful permanent residents, also known as green card holders, people with U.S. work visas and other types of visas, according to a senior U.S. immigration official. The official spoke on condition of anonymity to discuss internal deliberations.