It sounds like what's being said was that any previous thoughts on immigration were as a relatively untouched governor of a northern state. So, he went to the border states, to the police, both state and local, to the state border people and to the governors themselves.
By and large a good move. He clearly stated ZERO action on anything until we get closed border and control of any kind of immigration or visa. After that he'll talk about only a legal system and even that will be connected to unemployment and the economy.
So, good answer. Glad he went and did his homework.