Rep. Darrell Issa (R-Calif.) vowed to expand the scope of his Benghazi probe Tuesday after four State Department employees disciplined over the attack were reinstated by Secretary of State John Kerry.

Issa, the chairman of the House Oversight Committee, said Kerry’s actions showed the administration was not living up to its promise to punish those responsible for security failings at the Benghazi consulate, where U.S. Ambassador Christopher Smith and three others were killed in a terrorist attack on Sept. 11, 2012.

“Instead of accountability, the State Department offered a charade that included false reports of firings and resignations and now ends in a game of musical chairs where no one misses a single day on the State Department payroll,” Issa said in a statement.