Office of Management and Budget (OMB)

President Obama named a new Department of Energy secretary, a new budget director and a new head for the Environmental Protection Agency on Monday. All three will require confirmation by the Senate.

President Obama rounds out his Cabinet for his second term, nominating three new leaders Monday: Walmart Foundation's Sylvia Mathews Burwell for budget chief, MIT scientist Ernest Moniz to head the Energy Department and veteran regulator Gina McCarthy to run the EPA — a post that's likely be a lightning rod during Senate confirmations.

The president continues to fill vacancies in his cabinet that have been created by second-term departures. All three are subject to Senate confirmation.

President Obama plans to announce three Cabinet-level nominations Monday, including a new administrator for the Environmental Protection Agency, who could be on the hot seat in the looming battle over global warming.