[304]
On January 27, 2017, Trump signed Executive Order 13769, which suspended admission of refugees for 120 days and denied entry to citizens of Iraq, Iran, Libya, Somalia, Sudan, Syria, and Yemen for 90 days, citing security concerns. The order took effect immediately and without warning, causing confusion and chaos at airports.[305][306] Protests against the ban began at airports the next day.[305][306] Legal challenges to the order resulted in nationwide preliminary injunctions.[307] A March 6 revised order, which excluded Iraq and gave other exemptions, again was blocked by federal judges in three states.[308][309] In a decision in June 2017, the Supreme Court ruled that the ban could be enforced on visitors who lack a "credible claim of a bona fide relationship with a person or entity in the United States".[310]
The temporary order was replaced by Presidential Proclamation 9645 on September 24, 2017, which restricted travel from the originally targeted countries except Iraq and Sudan, and further banned travelers from North Korea and Chad, along with certain Venezuelan officials.