The laws are already overlapping enough that you can't simply get perfect enforcement of all of them. It's a question of tradeoffs - do you care more about depo

The laws are already overlapping enough that you can't simply get perfect enforcement of all of them. It's a question of tradeoffs - do you care more about deporting everyone you can, or about prosecuting rapists that target illegal immigrants. It's not arbitrarily deciding not to enforce a law, it's deciding that a different set of law enforcement priorities is more important.