"The revelations that FEC IT systems were compromised raises serious concerns," said Rep. John Mica, R-Fla., chairman of the House Government Operations Subcommittee which oversees federal IT matters. "I am working with my staff and the staff of the full House Oversight and Government Reform Committee to investigate the extent of the breaches, and I intend to conduct a full and thorough review of the vulnerabilities of FEC systems which should raise concerns for all federal elected officials."