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

The Trump administration has given 36 countries, most of them in Africa, a Wednesday deadline to commit to improve vetting or face a ban on their citizens visiting the United States.A weekend diplomatic cable sent by the State Department instructs embassies and consulates in the 36 countries to gauge their host countries’ willingness by Wednesday to improve their citizens’ travel documentation and take steps to address the status of their nationals who are in the United States illegally.

The administration gave the nations 60 days to fix concerns, according to a State Department cable. The president already imposed a full or partial ban on citizens of 19 countries.