This does beg the question in my mind: If a person is wrongfully determined to be an illegal immigrant despite only having US citizenship, and is actually deported to some country ICE convinces themselves that person is from rather than “deporting” them to some prison in an unrelated country like El Salvador, they would presumably be in that other country illegally at that point. Would they be liable to be deported back to the US in such a case, by the government of that country?