White House aides are reportedly advising President Trump that he faces the likelihood of being impeached.

Facing fallout from a July phone call with Ukraine's president in which he urged his counterpart to investigate Joe Biden and his son, Hunter, Trump is being told that his strategy of attacking Democrats on Twitter and deploying his allies on TV is not working, sources "close to the White House" told CNN.

Trump is nevertheless convinced he does not need a formal "response team" to counter the impeachment inquiry that began last week. And while the president is being warned that his personal attorney, Rudy Giuliani, is doing damage to his cause in his media blitz, Trump does not want to hire any more lawyers because he believes it would make him look weak.

The report comes on a busy news day in Washington, D.C., with House Democrats subpoenaing Giuliani for documents related to the new whistleblower complaint against the president. It was also reported that Secretary of State Mike Pompeo was part of the controversial phone call between Trump and Ukrainian President Volodymyr Zelensky on July 25.

Trump has spent the day attacking the whistleblower and attacking House Intelligence Committee Chairman Adam Schiff, who is taking a leading role in the impeachment inquiry. “This whole thing is a disgrace. There's been tremendous corruption and we're seeking it, it's called drain the swamp," Trump said.