Transportation is the largest source of global warming pollution in America, accounting for nearly 30% of total US climate pollution.

Not only are internal combustion powered cars bad for the climate, they produce health-harming pollutants like ozone and carbon monoxide that can exacerbate asthma, and are linked to lung disease and cancer. Cleaning up our cars is one of the best things the Biden Administration can do to fight climate change, and protect clean air. And President Biden, a self proclaimed "car guy", has made switching US automobiles from gas to electric a centerpiece of his big, bold climate agenda with laws like the Inflation Reduction Act (IRA).

But tax incentives and rebates, like what's in the IRA, only go so far. To really green our rides, we need powerful rules from the EPA and other agencies that will push auto manufacturers to phase out gasoline, and the climate and air pollution that comes with it. President Biden's EPA is considering some of the most ambitious emissions standards for medium- and light-duty vehicles ever starting in 2027.

Use this page to send a message to EPA Administrator Michael Regan to tell him to double down on clean cars, now - by pushing for 75% zero emissions vehicles by 2030, and 100% clean cars by 2035. If adopted, those standards will keep President Biden's commitment to clean up our cars, and cut US emissions of global warming pollution in half by 2035.