On January 27, 2017, President Donald Trump signed Executive Order No. 13,769 (EO-1), which, among other things, suspended entry for 90 days of foreign nationals from seven countries identified by Congress or the Executive as presenting heightened terrorism-related risks. EO-1 was immediately challenged in federal district court, and the judge entered a nationwide temporary restraining order enjoining enforcement of several of its provisions. A panel of the Ninth Circuit denied the government's emergency motion to stay the order pending appeal. Rather than continuing to litigate the matter, the government announced that it would revoke that order and issue a new one.
https://www.oyez.org/cases/2017/17-965