SALEM, Ore. (AP) — A rebellion by GOP politicians in liberal Oregon intensified Tuesday when Republican members of the House joined their Senate counterparts in a walkout, freezing legislation on climate change, wildfire mitigation, homeless assistance and a landmark compromise between the timber industry and environmentalists. Republicans say leaving the Capitol is the only way to halt legislation they view as too extreme. Democrats warn that doing nothing at this point is too dangerous. The current cap-and-trade bill calls for the state to reduce greenhouse gas emissions to at least 45% below 1990 emissions levels by 2035 and to at least 80% below by 2050.