100% Clean Economy Act of 2019 This bill establishes requirements to reduce greenhouse gas pollution. Specifically, the bill sets a national goal of achieving a 100% clean economy (i.e., economy-wide, net-zero greenhouse gas emissions) by no later than 2050. Each federal agency must develop and implement a plan to rapidly achieve the national goal. The Environmental Protection Agency (EPA) must monitor, evaluate, and report on the progress of the United States in achieving the national goal. In addition, the EPA must establish the Clean Economy Federal Advisory Committee to make recommendations to the EPA on one or more interim greenhouse gas emissions reduction goals for the United States to achieve before achieving the national goal. After obtaining the committee's recommendations, the EPA must recommend to Congress one or more interim goals.