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 in May made a get-well call to House Judiciary Committee Chairman Jerrold Nadler Jerrold (Jerry) Lewis NadlerDemocrats shoot down talk of expanding Supreme Court Schumer: 'Nothing is off the table' if GOP moves forward with Ginsburg replacement Top Democrats call for DOJ watchdog to probe Barr over possible 2020 election influence MORE (D-N.Y.), putting aside some often fierce talk between the political opponents.

Nadler was hospitalized shortly after a health scare at a press conference.

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Trump called Nadler from Air Force One while he was heading to Japan after Nadler appeared to become faint during an event. Yahoo News first reported the call Monday.

White House press secretary Sarah Huckabee Sarah Elizabeth SandersSarah Sanders on Trump's reported war dead criticism: 'Those comments didn't happen' Sarah Sanders memoir reportedly says Trump joked she should hook up with Kim Jong Un McEnany stamps her brand on White House press operation MORE Sanders later confirmed the call in an appearance on Fox News.

"You know, the president made that call quietly and he wanted to check on his health," Sanders said.

"They’ve known each other a long time. Certainly are, I would say, opponents of each other on most occasions. But the president wanted to check on him after he had that health scare and make sure he was doing OK."

Trump reportedly told Nadler he saw what had happened on TV and that he found the congressman to be “tough.”

He reportedly said that multiple times and asked if he could do anything to help. A person familiar with the call told Yahoo that they did not discuss politics or impeachment.

The Hill has reached out to the White House and Nadler's office for comment.

Following the incident at the press conference, a Nadler spokesperson said that he had seemed to be dehydrated.

"He is OK. Seems to have been dehydrated and it was very warm in the room,” the spokesperson told NBC New York after the incident. “He is now responsive and receiving a check-up."

Nadler and Trump both hail from New York and have butted heads on a number of issues since the 1980s, when the two first squared off over a real estate deal.

Nadler's committee is currently overseeing a sprawling investigation into the president, which has been a point of contention between the two men.

Brett Samuels contributed to this report, which was updated at 9:13 a.m.