The Biden administration will drop the Covid-19 testing requirement for inbound air travelers from abroad on Sunday, ending one of the longest-running travel restrictions of the pandemic. The rule, put in place by the Trump administration in early 2021 and later tightened by the Biden administration, most recently required inbound travelers, including U.S. citizens, to show proof of a negative Covid test a day before boarding U.S.-bound flights. Travelers entering the U.S. at land border crossings were exempt. The change takes effect at 12:01 a.m. ET on Sunday.