Tired of YouTube clips of precocious kids, stupid pets or faux superheroes? Try out the videos of House Minority Leader John Boehner, or maybe New York Rep. Charles Rangel, the lawmaker in charge of writing tax bills. Congress is launching official YouTube channels where members of the House and Senate can create and control videos of floor speeches, hearings or ribbon-cuttings. Lawmakers frequently use the online video service to promote themselves and their causes, but the new channels give viewers a single destination to find out what their representatives are up to.