Waterboarding may be illegal, but "I would bring it back," says Donald Trump. Chris Christie says waterboarding isn’t torture and he would use it against terror suspects. Jeb Bush won't rule it out. As for Marco Rubio, he vows to haul captured terrorists to Guantanamo Bay and "find out everything they know."One year after a bracing Senate report on post-9/11 CIA interrogation practices led Congress to ban waterboarding and other forms of torture, the leading Republican presidential candidates are talking like it’s 2002 all over again.