President Obama has named three more cabinet nominees to round out his second term.

Earlier Monday he announced he nominated Gina McCarthy, veteran of air and radiation at the Environmental Protection Agency, to head the EPA. He also chose MIT scientist Ernest Moniz to lead the Energy Department.

"They're going to be making sure we're investing in American energy, that we're doing everything we can to combat the threat of climate change, that we're going to be creating jobs and economic opportunity," Obama said of McCarthy and Moniz. "They are going to be a great team."

Lastly, he nominated the head of Walmart's philanthropic wing, Sylvia Mathews Burwell, as his next budget chief.

"She understands business and the role that business, government, and civil society must play to build a strong economy that provides opportunity and strengthens communities across the country," Walmart president Mike Duke said in a statement.

The president said Burwell not only knows how "to make the numbers add up" but to kindle economic growth in the middle class.

All three of the president's nominees will require Senate confirmation.