Yes, of course, the only possible expression of border control is absolute, and the only measure available is to treat people who have crossed the same as people who haven’t.

For what it’s worth I’m much closer to an open border advocate than the vast majority of the liberal-left spectrum, and it’s frankly absurd that the right’s take on this is “trump’s bigger detention camps and more aggressive policy means all the others literally didn’t exist even if they were basically his prototype”, when what he effectively did was add malice and lack of humanity to existing policy.