I guess you have not been following the news.

https://apnews.com/article/trump-venezuela-el-salvador-immig...

Constitution does not matter in this administration. They control the ICE and just do whatever they want. It's not like a judge can physically stop ICE from arresting and deporting people.

You are assuming the administration will respect legal decisions. This is sadly no longer a given...

If you are deported without any due process (as has already occurred), what will you do about it from a Salvadorian prison?

"It's just a goddamned piece of paper" -- a different Republican POTUS

They could. It might not be legal, but this Administration doesn't care much about that, and good luck enforcing a writ of habeas corpus issued by a US court on a prison in El Salvador.