President Donald Trump issued a Proclamation Wednesday that implemented a nearly full travel ban on nationals from a dozen countries, severely restricting potential entry into the United States.

The proclamation springs from an executive order issued during Trump’s first day in office that laid the foundation for the administration to enact extensive immigration control. Trump claimed the action served national security interests and limited instances of foreign nationals overstaying their visas:

As President, I must act to protect the national security and national interest of the United States and its people… Nationals of some countries also pose significant risks of overstaying their visas… which increases burdens on immigration and law enforcement… and often exacerbates other ris

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