On April 14, 2001, U.S. border officials detained John Allen Muhammad and two Jamaican women at Miami International Airport.The agents verified Muhammad's U.S. citizenship and permitted legal entry. The Jamaicans' documents were fraudulent, and they were immediately deported.That's the way it's supposed to happen.On Dec. 19, 2001, Bellingham police responded to a domestic dispute involving the same John Allen Muhammad and two other Jamaicans, Uma Sceon James and her son, John Lee Malvo. James told police that Muhammad was trying to manipulate her son. No crime was apparent, but when neither James nor Malvo could produce legal identification, Border...