Tracking Registered And Convicted Known (TRACK) Sex Offenders Act - Amends title IV (Grants to States for Aid and Services to Needy Families with Children and for Child-Welfare Services) of the Social Security Act to require the Secretary of Health and Human Services to disclose to the Federal Bureau of Investigation (FBI) information in the National Directory of New Hires to assist in the enforcement of a federal or state law requiring the registration of sex offenders. Authorizes the FBI to disclose such information to state or local law enforcement agencies for purposes of enforcing sex offender registration laws.