Someone needs to ask him who he's looking for. They've already said in interviews that they were going to target nationals from Haiti and Nicaragua first because those would be the easiest to round up and deport large numbers to due to logistics. The problem is, that's targeting people based on their nationality, and that's against federal law.
The mass deportation program is going to be a horrible cluster fuck. They don't really have the legal standing to implement it, but they're going to try anyway. Which is going to lead to even more human rights abuses. Which is going to lead to more violence. And a whole fuck ton of court cases and legal battles. Ending with mass deportation not actually happening, but probably thousands of people hurt or killed. A whole lot of lawyers getting way more rich than anyone has any right to. All so we can waste lives, money and brain cells on a moron with a bad idea.