Is the FBI lying about the Boston bomber, or is US-VISIT a $2 billion fraud?

American citizens may not know this, but since 9/11, every non-citizen, even green-card-holding Canadians like my parents, must have their fingerprints and photographs taken by U.S. Customs every time they enter the U.S. from abroad. There is NO WAY the FBI missed the Boston bomber's trip to Russia because of a simple spelling mistake. Either the FBI is lying, or our entire system is a fraud and the U.S. government completely wasted over $2 billion (and countless visitor headaches) on the US-VISIT program.