Oh really. So they did all the police work and investigation of thousands of crooks and had locations on these guys in a matter of hours?

No. Why would you think that? Throughout the Biden administration, they also arrested several hundred illegal immigrants every single day. That doesn't mean that each of those investigations was started and finished that day, in a matter of hours. It's because there's always investigations and interviews and new people that caught on new violations or get identified on an old warrant or who get turned in by someone and....well, you get the point.

Add into that the fact that ICE is now just rolling into workplaces to do raids - catching more people they didn't have a location on. Oh, and deporting people who were legally present under the Temporary Protected Status that was in place until Trump revoked it - it's no great feat to deport people whose locations you knew because they were here legally until you changed their status.

Trump's real problem, which he's just now beginning to face, is that ICE was always arresting and deporting immigrants. Yes, also during the Biden years - and by the end, they were maxing out current capacity, deporting close to a thousand per day. It's going to be super hard for Trump to exceed those numbers by any great amount for any length of time until he gets some serious additional funding. Which isn't going to happen for a while, since it looks like Congress is going to do one reconciliation bill instead of two - which is what Thune and the Senate were trying to tell him.