Since taking the Natural Resources gavel two months ago, Rep. Rob Bishop, 63, has brought a sense of humor and even humility to a committee that has fought bitter battles with the Obama administration and had more than its share of intramural brawls. The Utah Republican, at times, has been merciless, too. A year ago, he criticized a National Park Service official for delivering some of the "dumbest testimony I've ever heard" about a bill to rename a peak in Yosemite National Park. But while Bishop is likely to fight much -- if not most -- of the administration's energy and resource agenda, his adversaries credit him for opening lines of communication that were all but cemented shut over the past four years of GOP rule.