The Department of Homeland Security allowed a man to enter its headquarters last week using a fake Matricula Consular card as identification, despite federal rules that say the Mexican-issued card is not valid ID at government buildings. Bruce DeCell, a retired New York City police officer, used his phony card -- which lists his place of birth as "Tijuana, B.C." and his address as "123 Fraud Blvd." on an incorrectly spelled "Staton Island, N.Y." -- to enter the building Wednesday for a meeting with DHS officials. Mr. DeCell said he has had the card for four years and has used...