Lee Zeldin, the E.P.A. administrator, said the agency’s mission was to make it cheaper to buy cars, heat homes and run businesses.

The agency said it would roll back a range of rules and programs, including some that are foundational to its efforts to address climate change. A new WOTUS definition is expected, as well as rollbacks to an emissions reporting program.

The head of the Environmental Protection Agency has announced a series of actions to roll back landmark environmental regulations, including rules on pollution from coal-fired power plants, climate ch