The same bumbling inept federal agencies that allowed them to come illegally in the first place. Honestly, anyone who buys Bush's snake oil on this topic is beyond naive.
The people in charge of those agencies and the leaders that are ultimately responsible for enforcement of our laws are the "bumblers". The men and women that work in these agencies deserve our thanks and support.
The President is the Commander in Chief; he has the constitutional authority to protect the American people. He has the power to secure the borders Today.