"On Monday he denied trying to coerce Ukraine into investigating his Democratic rival Joe Biden, but wavered about whether he would release a transcript of a phone call that some Democrats say is grounds for his impeachment," the statement said.
When asked how seriously he takes the threat of impeachment by Congress, the US president replied: "Not serious at all."
Trump told reporters in New York that he did not pressure Ukrainian President Volodymyr Zelenskiy in a July phone call to launch a corruption investigation into Biden and his son in return for U.S. military aid.
“No I didn’t,” Trump said.
A U.S. whistleblower lodged a complaint about the contents of Trump’s conversation with Zelenskiy, leading to calls from some Democrats that Trump be impeached for trying to enlist a foreign power to smear a domestic opponent.
"We had a wonderful phone conversation with the president of Ukraine. Everyone knows that. It's just a witch hunt arranged by the Democrats," Trump told reporters after arriving at the UN General Assembly.
Trump gave a contradictory message about whether he would release a transcript of the call with the Ukrainian leader.
“I may do it because it was a very interesting call,” Trump said. “It was a very nice call. I hope you get to see it and I hope you get to see it soon,” he said.
But he added: “I don’t think it’s a great precedent to be releasing calls with foreign countries, heads of foreign countries. So I don’t think it’s a great precedent.”Information about Trump's telephone conversation with a foreign leader sparked a political struggle between Democrats warning of a threat to national security and Republicans who opposed former Vice President Biden, a Democratic leader seeking to challenge Trump in the 2020 presidential election.