Former Vice President Joe Biden went hard after Donald Trump on Wednesday, calling him out for “repeatedly smearing” him and his family amid the controversy over the president’s July call with the leader of Ukraine.

“Let me make something clear to Trump and his hatchet men and the special interests funding his attacks against me: I’m not going anywhere,” Biden was expected to say at a presidential campaign stop in Reno, Nevada, late Wednesday, according to prepared remarks provided by his Democratic campaign.

“You’re not going to destroy me. And you’re not going to destroy my family. I don’t care how much money you spend or how dirty the attacks get.”

Last week, House Speaker Nancy Pelosi (D-Calif.) announced a formal impeachment inquiry in response to a whistleblower complaint about a July 25 phone call between Trump and Ukrainian President Volodymyr Zelensky. The complaint said the call revealed Trump “pressuring a foreign country to investigate one of the President’s main domestic political rivals.”

According to the White House’s summary of the July call, Trump asked Zelensky to work with his personal attorney Rudy Giuliani and U.S. Attorney General William Barr to investigate Biden, a front-runner in the Democratic race, as well as his son Hunter, based on unfounded corruption allegations.

Trump has accused Biden of seeking the removal of a prosecutor in Ukraine when he was Obama’s vice president, supposedly in order to impede an investigation into the Ukrainian gas company on whose board his son was serving. Ukrainian authorities have cleared Biden of any wrongdoing.

Earlier Wednesday, Trump repeatedly evaded questions from reporters about comments he made about Biden during the July phone call, including a question on what exactly he had wanted Zelensky to do about the former vice president and his son.

“Look, Biden and his son are stone-cold crooked,” Trump claimed amid a long-winded response. “You know it, and so do we.”

Biden said Trump’s “scheme” involving Ukraine was because the president was “afraid.”

“He’s afraid of just how badly I would beat him next November,” Biden said, according to his prepared remarks.