Furthermore, even when this law has been used, there was a Supreme Court ruling upholding its application, i.e. the Japanese Internment.
Trump just grabbed these people off the street, many of them in the middle of immigration proceedings, with no deportation orders pending, and just put them on a plane. No notice. Even their lawyers didn't know what happened to them.
Is this what you want happening when "the law" decides you're a bad guy??? Trump assures us that these were the "really bad people", then why "disappear them"? Why not go to court and prove it???
And sending them to a prison in El Salvador, which is basically a death sentence? What kind of nation does such a thing?