Lawmakers in Massachusetts are following in the footsteps of other states by proposing a bill that aims to phase out the use of fossil fuels by 2050. The state already has enacted a Global Warming Solutions Act, which requires it to reduce greenhouse gas emissions 80 percent below 1990 levels by 2050. The new measure, Bill SD.1932 and dubbed the 100 Percent Renewable Energy Act, would increase Massachusetts’ renewable portfolio standard to 100 percent renewable energy by 2035 and eliminate fossil fuels from the heating and transportation sectors by 2050. It includes provision for making recommendations to the governor on clean energy industry job training and job growth. The bill, said one of its sponsors, is also meant to send a blunt political message to the Trump administration that the state is moving forward with its commitments to clean energy and long-term solutions to climate change even as the White House digs in its heels in support of coal, oil and gas.