Congress writes the laws. Don’t like the laws? Change them!
Of course, they won’t. They are covering their own tails. If they changed the laws and something were to happen, it would ricochet back on them.
Better to leave the laws in place and not enforce them. Then there’s deniability.
Homeland Security Secretary John Kelly chastised Congressional lawmakers critical of the Trump administration’s immigration enforcement, arguing his employees are only trying to keep America safe.