Former Secretary of State Hillary Clinton Hillary Diane Rodham ClintonBloomberg rolls out M ad buy to boost Biden in Florida Hillicon Valley: Productivity, fatigue, cybersecurity emerge as top concerns amid pandemic | Facebook critics launch alternative oversight board | Google to temporarily bar election ads after polls close Trump pledges to make Juneteenth a federal holiday, designate KKK a terrorist group in pitch to Black voters MORE said Tuesday that the White House’s attempt to out the whistleblower behind an explosive complaint involving President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE’s contacts with Ukraine is “really dangerous.”

“From everything we know — and we don’t know much — this is an experienced person who saw things that bothered him,” Clinton said on “Good Morning America.” “That’s what the whole whistleblower statute is for. And it is to protect their identity.”

She added: “I understand he’s going to testify, and we’ll let the process unfold.”

.@HillaryClinton thinks outing the whistleblower in the impeachment inquiry would be “really dangerous.” https://t.co/W1vUNMab63 pic.twitter.com/LWqKoCM6zS — Good Morning America (@GMA) October 1, 2019

Clinton said Speaker Nancy Pelosi Nancy PelosiDemocratic senator to party: 'A little message discipline wouldn't kill us' Overnight Health Care: New wave of COVID-19 cases builds in US | Florida to lift all coronavirus restrictions on restaurants, bars | Trump stirs questions with 0 drug coupon plan Overnight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds MORE (D-Calif.) effectively had “no choice” but to launch a formal impeachment inquiry against the president after a whistleblower complaint and subsequent reports revealed Trump urged Ukrainian President Volodymyr Zelensky to investigate former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE and his son and attempted to restrict access to any records of the call.

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Trump said Monday that the White House is “trying to find out” the identity of the intelligence community whistleblower, whose complaint is at the heart of the impeachment inquiry against the president.

The president, who demanded to meet the whistleblower and cast doubt on their complaint, claimed they reported “things that are incorrect.”

Lawyers representing the whistleblower have expressed “serious concern” for their client’s safety, sending a letter to lawmakers Sunday that urged them to “speak out in favor of whistleblower protection and reiterate that this is a protected system where retaliation is not permitted, whether direct or implied.”

The whistleblower's identity has not been publicly confirmed, though The New York Times reported last week that the person is a male CIA agent. A federal law known as the Whistleblower Protection Act shields federal whistleblowers who work for the government from workplace retaliation.