Republican members of the House Energy and Commerce Committee launched an investigation today into the Obama administration’s decision to delay the implementation of the employer mandate by a year.

In letters to Treasury Secretary Jack Lew and Health and Human Services Secretary Kathleen Sebelius, Republicans requested documents and information related to the decision to delay a requirement that businesses with over 50 employees provide health insurance deemed acceptable by the federal government, or pay a penalty.

“Just as the law was crafted out of sight from the American people, the administration is again taking care of some interests behind closed doors while struggling Americans are left to pay for the looming rate shock and grapple with the law’s complex mandates,” committee chair Fred Upton, R-Mich., said in a statement.

“Despite delays and missed deadlines, administration officials had repeatedly testified before Congress that they were still on schedule to implement the law. Yesterday, they admitted that wasn’t the case, and it’s clear we have no idea the full scope of delays and disarray that may be coming. The American public deserves answers,” Upton said.