The U.S. has finalized a regulation allowing authorities to deny asylum at the U.S.-Mexico border during public health emergencies, reviving a Trump-era policy tool. This measure, drafted during COVID-19, provides another method to turn away asylum seekers, though it has no immediate effect. Advocates criticize using health emergencies to deny asylum, calling it a twist of U.S. law. The Biden administration postponed the regulation's effective date multiple times but did not terminate it, while also allowing denial of "withholding of removal" protection.