The U.S. government has previously implemented travel restrictions. For example, multiple travel bans were issued in the last decade, most of which included a notice period of approximately 24 hours. This one will provide a greater notice period for travelers, but if history may serve as a guide, the ban will likely face legal challenges.

President Donald Trump issued a travel ban barring people in 12 countries—primarily from the Middle East and Africa—from visiting the U.S., attributing his proclamation to national security concerns and public safety.

President Donald Trump cited a range of reasons for placing 19 countries under new travel bans or restrictions in the U.S. They include allegations of lax screening of travelers, “a