Americans who travel abroad during the coronavirus pandemic must test negative or “present proof of having recovered from COVID-19” prior to returning to the United States, according to new Biden administration regulations.

“This rule applies to all travelers, 2 and over, including U.S. citizens,” acting Assistant Secretary Ian Brownlee, who leads the State Department’s consular affairs desk, told reporters Tuesday afternoon. “If you cannot easily access a COVID-19 test, or, if you test positive, you will end up overseas for much longer than you planned.”