President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE on Monday said he would make a nomination to the Supreme Court if there’s a vacancy before the 2020 presidential election.

“Would I do that? Of course,” Trump said in an exclusive interview with The Hill when asked if he would try to fill a high court vacancy during election season.

The position is an apparent reversal for the president, who as a candidate in 2016 backed Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellTrump 'no longer angry' at Romney because of Supreme Court stance On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline The Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power MORE’s (R-Ky.) decision to block former President Obama’s nomination of Merrick Garland Merrick Brian GarlandOn The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Senate to push funding bill vote up against shutdown deadline Poll: Trump opens up 6-point lead over Biden in Iowa MORE to the high court.

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But the president denied that his position was an about-face, since Republicans control both the Senate and the White House.

“They couldn’t get him approved. That’s the other problem because they didn’t have the Senate. If they had the Senate, they would have done it,” Trump said of Democrats.

“It depends. I mean, we have the Senate. We have a great Senate. We have great people. If we could get him approved, I would definitely do it. No, I’d do it a lot sooner than that. I’d do it. If there were three days left, I’d put somebody up hoping that I could get ’em done in three days, OK?” he continued.

Trump crafted a list in the months before the 2016 election of potential Supreme Court nominees, which helped secure him the support of some ambivalent conservative voters.

Since his inauguration, the Senate has confirmed dozens of Trump’s district court nominees as well as two Supreme Court nominees: Neil Gorsuch Neil GorsuchAbortion stirs GOP tensions in Supreme Court fight Poll: 59 percent think president elected in November should name next Supreme Court justice The Hill's Morning Report - Sponsored by Facebook - Trump, GOP allies prepare for SCOTUS nomination this week MORE and Brett Kavanaugh Brett Michael KavanaughTrump faces tricky choice on Supreme Court pick The Hill's 12:30 Report: Trump stokes fears over November election outcome The Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' MORE.

The president has touted those confirmations as being among the high points of his term, noting that the justices will reshape the high court for decades to come.

Gorsuch was confirmed 54-45 in 2017 to fill the seat left vacant by Justice Antonin Scalia’s death. Garland had originally been nominated by Obama for that seat.

Kavanaugh was nominated last year to replace retiring Justice Anthony Kennedy, and was confirmed 50-48 following a brutal confirmation battle that included multiple allegations of sexual misconduct against the judge.

McConnell, who earned the wrath of Democrats with his refusal to bring Garland’s nomination up for a vote, said last month at an event in Kentucky that Republicans would fill a Supreme Court vacancy even if it occurs during the 2020 presidential election.

“Oh, we’d fill it,” McConnell said to laughter from the audience.

The Senate majority leader justified the decision to hold up Garland’s nomination in 2016 by arguing voters deserved a say by picking a presidential candidate who would make the appointment to the high court.

Some Senate Republicans, including Judiciary Committee Chairman Lindsey Graham Lindsey Olin GrahamSteele Dossier sub-source was subject of FBI counterintelligence probe Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Key Democrat opposes GOP Section 230 subpoena for Facebook, Twitter, Google MORE (R-S.C.), have expressed reluctance to move forward on a nominee in an election year.

“If an opening comes in the last year of President Trump’s term, and the primary process has started, we’ll wait until the next election,” Graham said last year at an event hosted by The Atlantic.

Three of the nine current justices on the Supreme Court are 70 or older, though none have indicated they are preparing to retire. Justice Ruth Bader Ginsburg Ruth Bader GinsburgTrump 'no longer angry' at Romney because of Supreme Court stance Fox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline MORE is 86, Stephen BreyerStephen BreyerREAD: Supreme Court justices mourn death of Ginsburg, 'an American hero' Ginsburg death sets up battle over future of court Trump's Supreme Court list reveals influence of Clarence Thomas MORE is 80 and Clarence Thomas Clarence ThomasGOP senator attacks Biden: 'I'm not sure what he recalls' Abortion, gun rights, ObamaCare at stake with Supreme Court pick Rush Limbaugh encourages Senate to skip hearings for Trump's SCOTUS nominee MORE is 71. Ginsburg and Breyer are both members of the court’s liberal wing, while Thomas is a conservative.

Republicans currently control the Senate, with 53 seats. A nominee needs only a simple majority for confirmation.

The confirmation process typically lasts weeks or months, with individual senators seeking meetings with the nominee before they advance to a hearing before the Judiciary Committee and a full vote in the Senate.

In Monday's wide-ranging interview with The Hill, the president touched on topics including everything from the Federal Reserve to the U.S. Women's National Soccer team.

Asked about rising tensions with Iran, Trump said he has the authority to take military action against the nation without congressional approval.

"But we’ve been keeping Congress abreast of what we’re doing ... and I think it’s something they appreciate," he said. "I do like keeping them abreast, but I don’t have to do it legally."

"We were pretty close to maybe making a decision to strike. Then I decided not to do it. Nobody went out, by the way. I was going to make that decision by a certain time, and I decided not to do it because it wasn’t really proportional," Trump added.

He also weighed in on the 2020 campaign, saying he hopes Democratic front-runner former Vice President Joe Biden Joe BidenPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Fox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio MORE "does very well," but he thinks "there is something going on in that brain of his."

"How he doesn’t get President Obama to endorse him — there has to be some reason why he’s not endorsing him," the president said. "He was the vice president. They seem to have gotten along. And how President Obama's not endorsing him is rather a big secret," Trump mused, adding, "Then he goes and lies and said, 'I asked the president not to endorse me.' Give me a break."

—Updated at 8:12 p.m.