By Alan Gomez, Jack Gillum, and Kevin Johnson
Arizona Gov. Jan Brewer has warned of human skulls rolling through her state's deserts. Rep. John Culberson, R-Texas, says violence on the U.S. side of the border is "out of control." Rep. Candice Miller, R-Mich., has suggested sending a military brigade to protect Americans.
"Of course there is spillover violence along the border," Rep. Michael McCaul, R-Texas, said during a recent congressional hearing. "It is not secure and it has never be...