President Obama's pick to head the EPA's air pollution division is being blocked from confirmation by Sen. John Barrasso, R-Wyo., over concerns about the agency's plans for regulating carbon dioxide.
Barrasso's office confirmed Wednesday that he has placed a hold on the nomination of Gina McCarthy to become director of the EPA Office of Air and Radiation.
The Senate Environment and Public Works Committee approved McCarthy's nomination last week by voice vote, with only Barrasso opposed.
McCarthy is the head of the Connecticut Department of Environmental Protection.
