on january 27, president trump signed an executive order that stopped refugees from entering the country for 120 days and denied entry to citizens of iraq, iran, libya, somalia, sudan, syria, and yemen for 90 days, citing security concerns about terrorism. the next day, thousands of protesters gathered at airports and other locations throughout the united states to protest the signing of the order and detainment of the foreign nationals. later, the administration seemed to reverse a portion of part of the order, effectively exempting visitors with a green card.