john mccain, ali suleiman aujali and martin indyk, thank you all. [applause] >> this week on "red to the white house," possible republican presidential candidate donald trump speaks to the tea party. now available, c-span does the congressional directory, a guide to the congress. inside, district maps and committee assignments, and information on the white house, supreme court justices, and governors. order online at c-span.org. >> two recent studies indicate that drilling for national gas in the u.s. may not be as safe or environmentally conscious as previously thought. the deputy minister for the environmental protection agency testified at a hearing on the subject. state environmental officials also testified. this is about two hours and 15 minutes. subcommittee on water and wildlife. i want to thank senator boxer and >> let me start off by saying the united states has as much natural gas as saudi arabia has oil. according to penn state, the shale which runs from new york to west virginia may be the second largest natural gas field in the world.