The Biden admin handed out asylum, parole, SSNs, and work auths like they were candy, knowing full well that it would be logistically impossible to give them all some kind of day in court prior to removal. The admin then surrendered the fate of these people to the whims of the "We're Going to Deport Them All" party by losing an election.
Btw, deporting them all to a 3rd world supermax is the moderate-left option.