...Obama used fundraisers on Wednesday to assuage supporters' concerns about a transnational oil pipeline and his commitment to tackling climate change, while urging them to drive Republicans out of power in Congress in 2014... That fundraiser, a cocktail reception priced at $5,000 a person, was held at the home of Kat Taylor and her husband, billionaire former asset manager Tom Steyer, an ardent opponent of the [Keystone Pipeline]... "My intention here is to try to get as much done with the Republican Party over the next two years as I can, ‘cause we can't have perpetual campaigns," he said.