Graham vows to publicly question whistleblowers if Trump is impeached

Sen. Lindsey GrahamLindsey Olin GrahamSenators zero in on shadowy court at center of IG report Graham: People should be fired over surveillance report findings GOP, Trump campaign rip CNN for coverage of Horowitz hearing MORE (R-S.C.) promised to question the whistleblowers publicly if President TrumpDonald John TrumpSenate gears up for battle over witnesses in impeachment trial Vulnerable Democrats tout legislative wins, not impeachment Trump appears to set personal record for tweets in a day MORE ends up being impeached.

Graham said on Fox News' "Sunday Morning Futures" that if the president is impeached, he intends to have the whistleblowers testify in the Senate if they don't go before the House. 

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"If the whistleblowers' allegations are turned into an impeachment article, it's imperative that the whistle-blower be interviewed in public, under oath and cross-examined. Nobody in America goes to jail or has anything done to them without confronting their accuser," he told host Maria BartiromoMaria Sara BartiromoTop Republican: Democrats' weekend document dump shows impeachment inquiry is a 'farce' Nunes: 'Sickening' that Schiff obtained his phone records Graham expects Horowitz investigation to show evidence was manipulated, withheld MORE.

The South Carolina senator said the whistleblowers need to come forward so the "public can judge their credibility."

The House opened the impeachment inquiry after reports emerged of a call in which Trump asked the Ukrainian president to investigate former Vice President Joe BidenJoe BidenSenate gears up for battle over witnesses in impeachment trial Conservative group hits White House with billboard ads: 'What is Trump hiding?' Democrat representing Pennsylvania district Trump carried plans to vote to impeach  MORE following Trump's decision to withhold military aid from the country. 

A whistleblower report on the call thrust the conversation into the spotlight, and the White House released a partial readout of the call. A second whistleblower, who reportedly has firsthand knowledge of the events, has also talked to the intelligence community's inspector general.

Graham compared the whistleblower accusations to "unverifiable" allegations of sexual assault against Supreme Court Justice Brett KavanaughBrett Michael KavanaughOvernight Health Care — Presented by That's Medicaid — Progressives hope to avoid drug-pricing showdown with Pelosi | 'Medicare for All' backers get high-profile hearing | Dems take victory lap after eliminating drug protections in trade deal Justices grapple with multibillion-dollar ObamaCare case Potential Dem defectors face pressure on impeachment MORE last year. 

"This is Kavanaugh all over again," he said.