MSNBC's Katy Tur challenged a Trump administration aide during an interview on Wednesday, pressing him on whether the president has a health care plan.

"We are two years into his presidency. We still have not seen a plan from the White House," she said on "MTP Daily," repeatedly pressing Marc Short, chief of staff to Vice President Pence and former White House legislative director. "When are we going to see this plan?"

The Department of Justice on Tuesday decided to back a legal effort to strike down the entirety of former President Obama’s signature health care law.

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"If everything that you say is true and if it goes to the Supreme Court and is not upheld again by Chief Justice [John] Roberts ... what is the plan you guys have to replace it?" Tur asked Short.

"You should rest assured that 20 million Americans will certainly not be without health insurance," Short responded, indicating that a new plan would be introduced in the "coming months."

Tur and Short got in a heated clash over whether Republicans have ever had a consensus about a health care plan to replace ObamaCare. Republicans failed several times in 2017 in their attempts to repeal the law.

"On occasion there was one or two exceptions of Republicans who could not support it," Short said, acknowledging the late Sen. John McCain John Sidney McCainCindy McCain endorses Biden: He's only candidate 'who stands up for our values' Biden says Cindy McCain will endorse him Biden's six best bets in 2016 Trump states MORE's (R-Ariz.) key vote against repealing ObamaCare.

He said the administration would eventually be able to win over moderates such as Sen. Susan Collins Susan Margaret CollinsSenate GOP aims to confirm Trump court pick by Oct. 29: report The Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Senate GOP sees early Supreme Court vote as political booster shot MORE (R-Maine), who on Wednesday said she is "appalled" by the Trump administration’s decision not to defend the current health care law.

Tur also asked if health care could be a winning issue for Republicans after many Democrats were successful in campaigning on protecting ObamaCare in the 2018 midterm elections.

"Absolutely, I think it's a winning issue. ... Republicans have won on promises to repeal and replace ObamaCare," Short responded.

"This law has been in place since 2010," Tur said. "Republicans have campaigned consistently on repealing and replacing it. They tried again to do it 70 times. The president ... talked about repealing and replacing ObamaCare. He'd come up with something beautiful and fantastic and everybody would be covered."

"We will be coming forward with a plan in the next coming months," Short said, noting that the Department of Health and Human Services would be working on one.