Enough is enough. They're killing us with our own kindness.
Not enough border agents?
Require local law enforcement to bust the illegals.
Set up regional outdoor outprocessing camps on federal land to hold them for transport by our military back where they belong. Make them dig their own latrines and live in tents. Here they'll be photgraphed, printed & dna sampled. If need be, they'll be interrogated about illegal activities (i.e. drugs or terrorist ties) before/if we send them back.
No more Mr. Nice Guy Uncle Sam. If that doesn't work, use the military to round them up. Illegal is illegal is illegal. Our country has become the king of handouts: "Hey amigo, come here and we'll feed you and all of your relatives plus house you and even give you free money and medical care - plus you don't even have to work! Just vote for the bleeding heart liberals who keep giving our country away, that's all..."