U.S. Republican Senators David Vitter (R-LA), Jim Inhofe (R-OK), Tom Coburn (R-OK), John Cornyn (R-TX) and Ted Cruz (R-TX), sent a letter to EPA Inspector General Arthur Elkins Jr. informing him that they view the Office of Inspector General’s (OIG’s) recent announcement of plans to conduct research into states’ ability to regulate hydraulic fracturing and its potential threat on water sources as “wholly inappropriate,” and request that the investigation end immediately. The senators believe the planned research is outside of the scope of the EPA OIG’s core mission, which is to “prevent and detect fraud, waste, and abuse... of the programs and operations of the Environmental Protection Agency.” The senators also question why OIG would conduct such research when OIG is admittedly facing a very tight budget and staff reductions.