The environmental policy of the United States is federal governmental action to regulate activities that have an environmental impact in the United States. The goal of environmental policy is to protect the environment for future generations while interfering as little as possible with the efficiency of commerce or the liberty of the people and to limit inequity in who is burdened with environmental costs. This policy grew mainly out of the environmental movement in the United States in the 1960s and 1970s during which several environmental laws were passed, regulating air and water pollution and forming the Environmental Protection Agency (EPA). Partially due to the high costs associated with these regulations, there has been a backlash from business and politically conservative interests, limiting increases to environmental regulatory budgets and slowing efforts to protect the environment. Since the 1970s, despite frequent legislative gridlock, there have been significant achievements in environmental regulation, including increases in air and water quality and, to a lesser degree, control of hazardous waste. Due to increasing scientific consensus on global warming and political pressure from environmental groups, modifications to the United States energy policy and limits on greenhouse gas have been suggested.
The two major policy tools for protecting the environment are rules and inducements. The United States has chosen to use rules, primarily through regulation. Such regulation can come in the form of design standards and performance standards. Performance standards specify emission levels and let those covered by the rules decide how those levels will be met. Design standards specify exactly how performance standards will be met.
Alternatively, the government can use inducements, or "market reform". Inducements are rewards and punishments used to influence people or groups. The two major types of market reforms are charge systems, such as emissions taxes, and "tradable permit systems". One type of tradable permit system is an "auction of pollution rights" in which the amount of allowed pollution is set and divided into units, which are then auctioned, giving environmental organizations the opportunity to buy the units to create a cleaner environment than originally planned. Such a plan was implemented for SO2 emissions in the 1990 Acid Rain Program and has been undertaken for greenhouse gases on a regional scale as a way to mitigate global warming.