GREENVILLE, S.C.—Donald Trump pledged Thursday that supporting women’s health will be “a very major thing” in his presidential campaign.

“I will take care of women’s health and women’s health issues better than anybody and far better than Hillary Clinton, who doesn’t have a clue,” he told reporters after an afternoon rally here.

The Republican, campaigning in the Bible Belt, also slammed Jeb Bush for saying recently that he’s “not sure we need half a billion dollars for women’s health issues.” The former Florida governor later said he misspoke.

But Trump said it’s a window into what he really thinks.

“That was a terrible thing for him to say,” he said of Bush. “I cherish women, and I say it all the time. I will take care of women. Women under my administration will be taken care of, not like Jeb Bush; what he said was a disgrace.”

A spokeswoman for Bush fired back.

“Mr. Trump is trying to overcompensate for the fact that he knows Jeb has experience as a successful pro-life conservative Governor who funded women's health initiatives, while Trump has spent his life as a liberal New York socialite who has supported partial birth abortion and socialized health care,” Bush spokeswoman Kristy Campbell said in an email. “Governor Bush remains committed to defunding Planned Parenthood and ensuring those dollars instead to the many quality women’s healthcare programs across the nation.”

Clinton spokespeople did not immediately respond to requests for comment.

Trump said that his daughter, Ivanka, and wife, Melania, have been encouraging him to talk more about women’s health on the campaign trail.

“They know how I feel about women and women’s health issues, and they said you should really talk about it more,” he said. “For me, it’s going to be a very major thing.”