Feds admit they used secret anti-terror mass surveillance tool to catch an undocumented waiter

Rudy Carcamo-Carranza was an undocumented restaurant worker in Michigan wanted for a DUI and a hit-and-run; the FBI and ICE used IMSI catchers -- powerful, secretive cellphone tracking tools that the agencies bill as a kind of superweapon in the war on terror -- to catch him and put him up for deportation. (more")