You're taking what they're saying at face value. The policy goal of the Republican party is to create a white, Evangelical ethnostate.
Their issue isn't legal vs illegal immigration. It's white vs nonwhite. They make "the legal way" harder for anyone that isn't white, which doesn't stem immigration. It just makes it easier to turn away non-whites at the border.
Just a bunch of nonsense lies. You live in an echo chamber outside of reality.
I suggest some introspection.
I am very tired of defending this, because it's so self evident to me from listening to what Republican politicians say and do. The echo chamber isn't telling me that we're months away from concentration camps for brown people, that came from Stephen Miller. That's just one example among many.