Rudy Giuliani, the personal lawyer for President Trump, alleged that a Ukrainian natural gas company that employed Joe Biden’s son Hunter also paid the former vice president $900,000 in lobbying fees.

Giuliani, appearing Wednesday night on Fox News’ “The Sean Hannity Show,” cited as evidence documents released by  Andriy Derkach, a member of Ukraine’s parliament.

“Biden, his son and his brother had a 30-year-long scam to make money, millions, selling his public office,’ Giuliani told Hannity.

Derkach held a press conference earlier Wednesday in Kiev where he claimed he had documents showing how Burisma Holdings paid Biden the lobbying fees.

Hunter worked for Burisma while his father was vice president and was the point man on the US’ effort to stomp out corruption in Ukraine.

As vice president, Biden pushed Ukraine to dump top prosecutor Viktor Shokin or the US would withdraw $1 billion in loan guarantees.

President Trump and his allies, including Giuliani, allege Biden tried to have Shokin fired because he was investigating his son.

There has been no evidence so far that Hunter Biden was involved in any wrongdoing, Ukraine’s chief prosecutor has said.