Rudy Giuliani Rudy GiulianiGrand jury adds additional counts against Giuliani associates Lev Parnas and and Igor Fruman Juan Williams: Breaking down the debates Giuliani criticizes NYC leadership: 'They're killing this city' MORE, President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE’s personal attorney, on Sunday said he would “love” to be a witness in the Senate’s upcoming impeachment trial as Democrats press for further information about his and the president's dealings in Ukraine.

“I would love to see a trial. I’d love to be a witness — because I’m a potential witness in the trial — and explain to everyone the corruption that I found in Ukraine, that far out-surpasses any that I’ve ever seen before, involving Joe Biden Joe BidenSenate Republicans face tough decision on replacing Ginsburg What Senate Republicans have said about election-year Supreme Court vacancies Biden says Ginsburg successor should be picked by candidate who wins on Nov. 3 MORE and a lot of other Democrats,” he said on John Catsimatidis’ radio show.

Giuliani was a key figure in Trump’s alleged efforts to get Kyiv to investigate his political rivals, chiefly former Vice President Joe Biden. The alleged pressure campaign is at the heart of the Senate’s upcoming impeachment trial.

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Recently uncovered evidence pointed to Giuliani's contact with several Ukrainian figures, including President Volodymyr Zelensky.

New documents were also released this week by the House regarding Giuliani's associate Lev Parnas’ work in Ukraine. The documents included text messages that sparked questions about whether or not Republicans had former Ukrainian Ambassador Marie Yovanovitch Marie YovanovitchGrand jury adds additional counts against Giuliani associates Lev Parnas and and Igor Fruman Strzok: Trump behaving like an authoritarian Powell backs Biden at convention as Democrats rip Trump on security MORE under surveillance. These new revelations have led to heightened pressure for the Senate to call both Giuliani and Parnas as witnesses in its trial next week.

House Democrats allege that the White House sought to leverage nearly $400 million in military aid and a White House visit to pressure Ukraine to launch the requested probes.

While Democrats have maintained the pressure put on Kyiv was improper, and the Government Accountability Office (GAO) said Thursday that the administration’s freezing of nearly $400 million in aid to Kyiv broke the law, Giuliani has maintained Trump’s rivals were in fact engaged in corruption.

“I have those facts. I have those witnesses. I have documents, and I have recordings. And I would love to get them out in public, because everyone is trying to suppress them to protect Joe Biden,” he said.

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No evidence has emerged to suggest the former vice president acted improperly regarding his dealings with Ukraine.

The Senate, which will launch its trial Tuesday, is widely expected to acquit Trump along mostly party lines.

John Catsimatidis is an investor in The Hill.