PORTSMOUTH, N.H. - Democrat Barack Obama is calling for sharply reducing U.S. greenhouse gas emissions and forcing power companies and other businesses to pay for all of their pollution.

He said Monday that he would get results, unlike those whom he said are bound by the unwritten rules and timidity of Washington politics.

"Our energy problem has become an energy crisis because no matter how well-intentioned the promise, no matter how bold the proposal, they all fall victim to the same Washington politics," Obama said.

He spoke at the new, energy-efficient Portsmouth Public Library, where about 100 invited guests watched a short video featuring every president since Gerald Ford promising to curb the use of fossil fuels — contrasted with a graphic illustrating the nation's increasing dependence on foreign oil. Obama suggested his rivals for the Democratic nomination would provide more of the same.