WASHINGTON — Donald Trump would “strongly consider” appointing Supreme Court justices as president to overturn same-sex marriage, the Republican presidential front-runner said Sunday.

Courting evangelical voters in Iowa, Trump told “Fox News Sunday” he disagreed with last year’s landmark ruling that legalized same-sex marriage because states should decide.

“If I’m elected I would be very strong on putting certain judges on the bench that I think maybe could change things, but they have a long way to go,” Trump said.

Ahead by single digits in Iowa a day before voters head to the caucuses, Trump continued his attacks on main rival Ted Cruz who has accused Trump of being too liberal on social issues and too cozy with Hillary Clinton because of his “New York values.”

Trump assailed Cruz Sunday for his Canadian birth, not properly disclosing a loan from Goldman Sachs and “nobody” liking him in the Senate. Trump boasted on ABC’s “This Week” that “many” of Cruz’s colleagues will be endorsing him “very soon.”

For his part, Cruz said “no matter what he says, I like Donald. I will continue to praise him as bold and brash,” Cruz told CNN’s State of Union despite Trump calling him a Canadian “anchor baby.”

But on Fox News Sunday, Cruz wasn’t as nice called it the “height of hutzpah” for Trump to criticize him for Senate loans he repaid when the billionaire owes “at least $480 million right now” and has “declared bankruptcy four times.”

“For him to sit there, owing hundreds of millions or billions, who knows, and to criticize Heidi and me for putting our entire net worth into the campaign is astonishing, it is not honest,” Cruz said.

“Donald Trump supports expanding Obamacare to make it full-on socialized medicine like Bernie Sanders,” he added.

Trump called Cruz a “liar.”

Cruz shot also back against influential Iowa Gov. Terry Branstad who has railed against Cruz for not backing an ethanol mandate that’s important to Iowa farmers.

“His son is a lobbyist who makes hundreds of thousands of dollars lobbying on ethanol. So his family makes a ton of money,” Cruz said on NBC’s Meet the Press.

View video

The Donald Sunday also defended giving tens of thousands of dollars to the Clinton Foundation as an “obligation” to get along with everybody in business.

“I did give to the Clinton Foundation. What I didn’t know is they’d be using it for private aircraft and things like that,” Trump said on Fox News Sunday.

“The Clinton Foundation was helping with Haiti and with lots of other things, and I thought it was going to do some good work.”

Meanwhile, Clinton was on the defense about new revelations by the State Department her server had 22 “top secret” emails.

“This is very much like Benghazi. You know, the Republicans are going to continue to use it, beat up on me. I understand that. . … They’re grasping at straws,” Clinton told ABC’s “This Week.”

She said called the political “timing” of leaks on her private email server “concerning.”

In her final pitch against the Democratic socialist Bernie Sanders, Clinton said she had realistic goals.

“I’m not going to sit here and overpromise and under-deliver,” Clinton said.

Sanders said Sunday he still doesn’t want to talk about Clinton’s emails, but then reminded voters it’s a problem.

“Look at the front pages today in terms of what Secretary Clinton is getting slapped with,” Sanders told ABC.