What Is Law
Each nation also retains discretion in formulating a response to the aggressive acts of a neighboring state.
It is up to the EPA to enforce those laws as created by Congress. Congress has also allowed the EPA to create its own regulations to enforce legislation Congress has enacted. For example, if Congress enacted legislation that mandated that all motor vehicle emissions be reduced by 30% by 2010 and authorized the EPA to determine how to achieve such a goal, the EPA would write specific regulations to ensure compliance with the law. These regulations would then have the full force of federal law behind them. States have similar administrative agencies.