There are a number of bills introduced each Congress to amend specific provisions of the Clean Air Act.  These include, among others, regulatory reform, health-based air qiality standards and changes to EPA's fuels standards.

Each year, the President recommends a budget to carry out the activities of the federal government. An important component is the funding of grants to state and local air pollution control agencies under the Clean Air Act.

Climate legislation to control greenhouse gas emissions has attracted considerable attention this Congress, both from supporters and opponents. Placing a price on carbon has been central to this debate.

On December 4, 2015, President Obama signed into law the Fixing America's Surface Transportation (FAST) Act, a five-year (through FY 2020), $305-billion bill that replaces MAP-21, which was enacted in July 2012.