In a letter released Monday, Rep. Elijah Cummings (D-Md.) revealed ousted National Security Adviser Michael Flynn apparently lied to Pentagon investigators about his foreign income and contacts with Russian officials when he was re-applying for his top-secret security clearance last year. Cummings, the ranking Democrat on the House Oversight Committee, said the committee had obtained documents that "appear to indicate" Flynn "lied to investigators" while applying to renew his clearance in February 2016.