Brown voted to ban the EPA from controlling gases blamed for global warming.
BOSTON — The League of Women Voters is launching an advertising campaign faulting U.S. Sen. Scott Brown for voting with other Senate Republicans to ban the Environmental Protection Agency from controlling gases blamed for global warming.
The amendment was defeated in the Democrat-controlled Senate.
The television ad shows a child breathing through an oxygen mask and urges the Republican to "protect the people and not the polluters."
Brown called the ad "political demagoguery" and said it exposes the League as "nothing more than a pawn in the Massachusetts political machine."
The measure would have repealed a 2009 finding that climate change caused by greenhouse gases endangers human health and would have prevented the EPA from using existing laws to regulate heat-trapping pollution.
The League also paid for a similar ad criticizing Missouri Democratic Sen. Claire McCaskill.