The federal judge overseeing the case of a man mistakenly deported to El Salvador said she would allow for expedited fact-finding to help her figure out whether the Trump administration is complying with her order that it “facilitate” his return from one of the country’s notorious mega-prisons.
Unfortunately the only way to arrest a president is the impeachment process. Which wont happen with a republican super majority. Unless you can get Republicans to grow a spine there is no other legal process to hold the President accountable.
However I’m not sure about those employed by in his administration. But then again if he’s willing to pardon Jan 6th rioters he will definitely pardon people in his administration…