Graham vows to publicly question whistleblowers if Trump is impeached

Sen. Lindsey GrahamLindsey Olin GrahamThe Hill's 12:30 Report - Presented by Facebook - Biden meets with lawmakers amid domestic agenda panic The Hill's Morning Report - Presented by Alibaba - House Democrats plagued by Biden agenda troubles Graham tries to help Trump and McConnell bury the hatchet MORE (R-S.C.) promised to question the whistleblowers publicly if President TrumpDonald TrumpUkraine's president compares UN to 'a retired superhero' Collins to endorse LePage in Maine governor comeback bid Heller won't say if Biden won election 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 BartiromoThe Memo: Fall in white population could add fuel to nativist fire A tale of two chambers: Trump's power holds in House, wanes in Senate The Memo: Biden beats Trump again — this time in the Senate 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 BidenUkraine's president compares UN to 'a retired superhero' Biden touts 'progress' during 'candid' meetings on .5T plan Biden to tap law professor who wants to 'end banking as we know it' as OCC chief: reports 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 KavanaughGraham tries to help Trump and McConnell bury the hatchet Republicans keep distance from 'Justice for J6' rally Senators denounce protest staged outside home of Justice Kavanaugh MORE last year. 

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