Since his inauguration, Trump has cracked down on foreign nationals in the United States, mainly through executive orders

The State Department memo sets a 60-day deadline for targeted nations to meet new security and documentation requirements. Countries that do not comply risk facing full or partial entry bans to the United States.

President Donald Trump this month enacted a travel ban on 12 countries and imposed restrictions on seven others, although no previously issued visas have been revoked. His proclamation instead banned issuing new visas to citizens of the 12 countries.