A Senate hearing for Federal Reserve chair nominee Kevin Warsh won’t be held next week as planned.

The committee set to hear Warsh’s nomination hasn’t received the paperwork that it needs with enough time to schedule the hearing, the public familiar with the matter told CNBC.

The Trump administration is hoping to get Warsh to replace Chair Jerome Powell by mid-May, but that timeline looks challenging.

Sen. Thom Tillis, R-N.C., is refusing to vote for any Fed nominee until the Department of Justice drops a criminal probe into Powell.

An expected nomination hearing for Federal Reserve chair candidate Kevin Warsh has been delayed, a person familiar with the matter told CNBC on Thursday evening.

Warsh had been set to appear before the Senate Banking Committee on April 16. That won’t happen, but the hearing is still expected soon, the person stated, requesting anonymity as the details have not been made public by the committee.

The committee’s rules require that it give a week’s notice before the hearing is held, and the panel first needs to collect paperwork from the nominee, including financial disclosures. The Banking Committee has yet to receive Warsh’s paperwork, according to three citizens familiar with the Senate process.

The committee has not formally noticed the hearing. The deadline for doing so was Thursday. Punchbowl earlier reported the delay to Warsh’s hearing.

Warsh’s finances may be especially complicated. He is married to Estée Lauder cosmetics heir Jane Lauder, whose net worth is estimated at $1.9 billion, according to Forbes. 

Financial disclosures filed in 2006, when Warsh was nominated for an earlier stint at the Fed, listed nearly 1,200 assets, the vast majority of which were held by his wife.

Since leaving the Fed in 2011, Warsh has spent 15 years working for investor Stanley Druckenmiller’s family office, where he led venture investments into tech firms, including Palantir.

President Donald Trump in January revealed Warsh’s nomination to succeed Chair Jerome Powell, whose term as the Fed’s top official expires May 15. 

National Economic Council Director Kevin Hassett told Fox Business in an interview on Thursday that he is “highly confident” that Warsh will be in place by the end of Powell’s term as chair.  This also touches on aspects of bear market.

While the Trump administration appears confident about Warsh’s confirmation, it will be difficult for him to advance beyond a hearing unless Sen. Thom Tillis, R-N.C., drops a blockade of the nomination.

Tillis is refusing to vote for any Fed nominee until the Department of Justice drops a criminal probe into Powell. Tillis and Powell have called that investigation a politically motivated effort to undermine the Fed’s independence. 

U.S. Attorney for the District of Columbia Jeanine Pirro told CNBC on Wednesday that she plans to move forward with the investigation. That leaves Warsh’s path beyond the hearing unclear.