Kevin Warsh has clashed with Democratic senators during a fiery confirmation hearing to decide whether he should be installed as Federal Reserve chairman.
From suggestions that he would be President Donald Trump's "sock puppet" to questions over his links to paedophile financier Jeffrey Epstein, here are the key takeaways from Tuesday's showdown in the Senate.
Senator Elizabeth Warren, the ranking Democrat on the banking committee that is overseeing his confirmation, said Warsh would be little more as Fed chairman than Trump's "sock puppet".
Trump has suggested that, if confirmed, Warsh would conform to his agenda and lower interest rates, which the president argues is necessary to boost the US economy.
Warren said that "having a sock puppet in charge of the Fed would give the president access to the Fed's powerful authorities to enrich himself, his family and his Wall Street buddies".
Asked whether he would indeed be the president's sock puppet, Warsh said: "Absolutely not."
The former Fed governor said the independence of America's central bank "is essential" and vowed that he would be committed to preserving its self-governance.
Warren, who opposes Warsh's appointment, also questioned Warsh over his potential links to Jeffrey Epstein.
Warsh has disclosed hundreds of millions of dollars in financial holdings, including an investment fund worth at least $100m (£74m), in which the underlying assets have not been detailed.
"Do the [funds] invest in any companies affiliated with President Trump or his family, companies that have facilitated money laundering, Chinese-controlled companies or financing vehicles established by Jeffrey Epstein?" Warren asked.
Warsh declined to answer the question directly, but said he planned to divest his holdings if and when confirmed as Fed chairman.
His name crops up several times in the justice department's Epstein files, though simply appearing in the records does not imply wrongdoing.
Warsh used Tuesday's hearing to deny having agreed a deal with Trump to cut interest rates in return for being offered the job.
"The president never once asked me to commit to any particular interest rate decision, period, and nor would I ever agree to do so if he had, but he never did," he said.
Senator Ruben Gallego, an Arizona Democrat, noted the Wall Street Journal had reported last year that Trump pressed Warsh at a meeting to reduce borrowing costs.
