H. J. RES. 163 is a decision by Congress to say "no" to a rule made by the Environmental Protection Agency (EPA) about how much pollution can come from big power plants that burn fuel. Congress wants to make sure this rule doesn't happen, but they don't mention why or what they'll do instead to help the environment.

Congress is thinking about stopping a rule from the people who help keep the air clean, which tells big power plants how much bad stuff they can let into the air. If they stop the rule, it means there won't be any new instructions for these plants on how to keep the air cleaner.