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Jacquelyn Martin, Associated Press
President Barack Obama smiles during a joint news conference with Brazilian President Dilma Rousseff in the East Room of the White House in Washington, Tuesday, June 30, 2015.

NASHVILLE, Tenn. — President Barack Obama says he wants to refocus on improving health care quality, expanding access and rooting out waste now that the Supreme Court has upheld a key element of his health care law.

Obama is touting the Affordable Care Act at an elementary school in Nashville, Tennessee. He's speaking on the heels of last week's high court ruling on insurance subsidies in states that didn't set up their own health care exchange.

Obama says he's "feeling pretty good" about how his health care law is going. But he says there are still "huge areas of improvement."

The president says now that the law is settled, he hopes both parties will come together to make further improvements. He's calling on Republican-led states that refused to expand Medicaid to reverse course.