The White House has, so far, not released a transcript of the call. Trump suggested on Sunday that the topic of discussion during his call with Zelensky “was largely the fact that we don't want our people like Vice President Biden and his son [contributing] to the corruption already in the Ukraine.”

Senate Republicans have for the most part remained silent about the whistleblower complaint and the ongoing battle between House Democrats and the White House for it to be shared with Congress.

“I would urge him to continue to be as transparent as possible and tell us as much as he can without compromising executive privilege so that we can understand what happened,” he said during a radio interview with Hugh Hewitt on Monday.