 A Sierra Club member since high school, Quigley initially joined politics because of his desire to help the environment through legislation.Quigley has enacted this desire through supporting the American Clean Energy and Security Act, a 2009 bill to create an emissions trading plan which passed in the House of Representatives, but was defeated in the Senate.Quigley also introduced the Federal Birdsafe Buildings Bill, a 2011 initiative to make all buildings built by the General Services Administration built with the maximum amount of bird-safe materials and features.