Mick Mulvaney failed to pay more than $15,000 in payroll taxes for a household employee, he disclosed to the Senate Budget Committee, a new revelation that could damage his bid to join President-elect Trump's White House as budget director.

Mulvaney, a fiscally conservative South Carolina congressman, told the committee in a questionnaire that "I have come to learn during the confirmation review process that I failed to pay FICA and federal and state unemployment taxes on a household employee for the years 2000-2004," the New York Times reported Wednesday. He also said he had since paid the back taxes, with interest.

Chuck Schumer, the Senate Democratic leader, immediately pounced on the news to suggest that Mulvaney bow out.

"When other previous cabinet nominees failed to pay their fair share in taxes, Senate Republicans forced those nominees to withdraw from consideration," Schumer said in a statement. "If failure to pay taxes was disqualifying for Democratic nominees, then the same should be true for Republican nominees."

In 2009, President Obama's nominee to run the Department of Health and Human Services, former South Dakota senator Tom Daschle, withdrew his nomination after it was learned that he had failed to pay around $140,000 in taxes. A tax issue, which he later blamed on TurboTax, also imperiled the confirmation of Timothy Geithner to the Treasury, although he ultimately was cleared by the Senate.