Oregon wasted hundreds of millions of federal dollars allocated for its Obamacare marketplace, and the Obama administration allowed the misuse to occur, Republicans charge in a new report released Wednesday.

Republicans on the House Oversight Committee released the result of a year-long investigation into Cover Oregon, the state’s insurance exchange that officials shuttered after just one year due to major technical problems. According to their report, former Oregon Gov. John Kitzhaber and his staffers may have illegally interfered with the insurance marketplace, ultimately ensuring it failed so the state could instead use Healthcare.gov.