This is why we make it clear in Minnesota that it snows until June and all the lakes smell like death. It's a hellscape, really.

Apparently, not the only cover version:

I can tell you exactly why, though:
Everyone else that they sent to the El Salvador torture prison is still there, and still being tortured, at this moment. Letting Kilmar "get away" from them allows the focus to shift back to that fact.

Its anti individual rights
Its anti health & life
Its anti equality & equity
And more

It is racist
It is ableist
It is classist
And more

I think for them, its the ultimate control lever on the new country they want built. It their end around the Bill of Rights, congressional legislation, & legal precedent.