Less than a day after the Supreme Court said the Trump administration had to “facilitate” the return of a man mistakenly deported to El Salvador, the case appeared headed for even murkier waters.

His legal presence in the US was based on a protection known as “withholding of removal,” which was granted by an immigration judge in 2019. That status is awarded when a judge determines that deporting someone would expose them to persecution or torture in their home country.