In a “60 Minutes” interview scheduled to air Sunday, President-elect Donald Trump shifted his position on Obamacare, saying he would try to preserve key parts of the healthcare act, and also praised Hillary Clinton as “very strong and very smart.”

Seated with his wife, Melania, and his four children, Trump spoke to 60 Minutes correspondent Lesley Stahl in his first televised interview since winning the election.

Trump told Stahl that Clinton’s phone call conceding the election was “lovely” and acknowledged making the phone call was likely “tougher for her than it would have been for me,” according to previews of the interview released by CBS.

“She couldn’t have been nicer. She just said, ‘Congratulations, Donald, well done.'”