McCain: Call in the National Guard

Sen. John McCain wants to call in the cavalry to defend Arizona from illegal immigrants crossing the border from Mexico — and to shore up his own right flank.

McCain asked the Obama administration Monday to send National Guard troops to the border after a prominent Arizona rancher was found shot to death on his own property.

"I am asking you and the administration to immediately reconsider your position and send National Guard troops to our southern border region," McCain wrote in a letter to Homeland Security Secretary Janet Napolitano. Last year, the administration denied a request from Arizona Gov. Jan Brewer for National Guard protection for the border.