GOP strategist Ed Rollins ripped the whistleblower and impeachment inquiry on the Fox Business show.
The president has enlisted parts of the U.S. government and key allies in the pursuit of unproven or disproven conspiracy theories, some incubated in the dark corners of the internet.
The anonymous person has "never worked for or advised" a political campaign, the attorneys said.
Democrats are allegedly considering steps like having the Ukraine whistleblower testify remotely to protect the individual, according to The Washington Post.
The letter, signed by 90 former officials, stressed the importance of protecting the whistleblower's identity, The Wall Street Journal reported.
Rep. Eliot Engel, chairman of the House Foreign Affairs Committee, subpoenaed the secretary of state in September.
The GOP congressman repeatedly claimed that the president wasn't serious when he said China should investigate Joe Biden.
“It does not matter,” Rep. Chris Stewart said about a second whistleblower coming forward with information on Trump's Ukraine call.
The intelligence official is said to have firsthand knowledge of details cited in the first whistleblower's complaint against Trump.
Another official with more information on the White House's Ukraine plans is thinking about filing a whistleblower complaint, The New York Times reports.
Republicans are not as unified over the controversy as the president is insisting.
The inquiry could eventually reveal if the administration failed to follow regular procedures after Congress requested the president's tax records.
The news stories detail steps the Trump administration allegedly took to coerce Ukraine into investigating Vice President Joe Biden.
The Justice Department is supposed to tell the Federal Election Commission about any campaign finance legal matters it reviews. Did it?
The GOP senator has defended the Ukraine whistleblower but says Democrats are mishandling this case involving Trump's tax returns.
President Trump appears to be trying to desensitize Americans to the outrage over asking Ukraine to investigate the Bidens … by publicly asking China to investigate the Bidens.