Sanders would institute a carbon tax and aim to slash U.S. emissions by 40 percent by the year 2030, and 80 percent by 2050. He would end all federal subsidies for the gas, oil and coal industries.

Sen. Bernie Sanders, I-Vt., who has been touring swing states to fight President Donald Trump's policies, speaks Saturday at Lincoln High School in Warren, Mich. Jose Juarez, Associated Press ...