Over the Line: Fighting Corruption on our Border investigated the conduct of government officials when it comes to the porous Mexico-U.S. border. The FBI reports the border has become a possible pathway for foreign terrorists to easily reach U.S. soil. We examined the risk through the eyes of longtime rancher John Ladd, whose family has owned 14,000 acres in Arizona for generations. He's watched as a stunning half million illegal immigrants have been captured on his property and says many more have gotten away from Customs and Border Protection agents, who sometimes act suspiciously unconcerned. We intensely mined the FBI for information and convinced the agency to give us unprecedented, exclusive access to some of its case files and methods to tell some of the shocking stories of trusted border agents on the take.The lure of money from criminals who can pay is all too tempting for some of America's 60,000 border agents. The terrorism-related consequences are nothing short of chilling and potentially impact everyone who lives in the U.S.