The House Armed Services Committee marked up H.R. 1960, the National Defense Authorization Act for Fiscal Year 2014, on June 5 and considered several energy amendments introduced by Representative Mike Conaway (R-TX). The first amendment would restrict biofuels procurement until these fuels are cost-competitive with traditional fuels or until sequestration is lifted; it was approved. A second amendment, also agreed to by a voice vote, would require congressional authorization for military construction of biofuels refineries. The third amendment would exempt the Department of Defense from Section 526 fuel purchasing requirements. Representative Doug Lamborn (R-CO) introduced an amendment to stop the Defense Department from procuring electric vehicles, but it failed.