Washington (CNN) Rudy Giuliani privately sought hundreds of thousands of dollars in business from Ukrainian officials while trying to get dirt on former Vice President Joe Biden and his son, Hunter, The New York Times reported on Wednesday.

The report comes as President Donald Trump's personal lawyer continues to face questions about his work for Trump following the release of a whistleblower complaint at the center of impeachment proceedings involving the President and Ukraine. The complaint alleges the President abused his official powers "to solicit interference" from Ukraine in the 2020 election and that the White House took steps to cover it up. Trump has denied any wrongdoing.

Giuliani and other lawyers made repeated attempts to make Ukrainian officials their clients, the Times reported, citing documents they reviewed. One proposal signed by Guiliani in February involved the Ukrainian Ministry of Justice. The former New York mayor would have helped the Ukraine government find stolen money in return for a payment to his firm of $300,000.

In another proposal from February, The Times reports Guiliani would represent former Ukraine Prosecutor General Yuri Lutsenko to advise "on Ukrainian claims for the recovery of sums of money in various financial institutions outside Ukraine" if he paid $200,000 to Guiliani Partners and Joseph E. diGenova and Victoria Toensing, a legal team associated with Trump.

An updated proposal, signed by Giuliani, included directions on how to wire money to his firm and did not mention Lutsenko, the Times reports, but instead asked for $300,000 from the Ukrainian Ministry of Justice and the Republic of Ukraine.

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