Senate Judiciary Committee Chairman Chuck Grassley Charles (Chuck) Ernest GrassleySenate Republicans face tough decision on replacing Ginsburg What Senate Republicans have said about election-year Supreme Court vacancies Biden says Ginsburg successor should be picked by candidate who wins on Nov. 3 MORE (R-Iowa) said he believes the panel's chances of getting a voluntary interview with White House adviser Jared Kushner Jared Corey KushnerAbraham Accords: New hope for peace in Middle East Tenants in Kushner building file lawsuit alleging dangerous living conditions Trump hosts Israel, UAE, Bahrain for historic signing MORE "have been shot."

"I had hoped to speak with all the witnesses surrounding the Trump Tower meeting before releasing any of those transcripts," Grassley said Thursday, according to NBC News.

"But the ranking member unilaterally released the transcript of Fusion GPS founder Glenn Simpson. That has spooked other potential witnesses."

He added: "As a result, it looks like our chances of getting a voluntary interview with Mr. Kushner have been shot."

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His comments come after Sen. Dianne Feinstein Dianne Emiel FeinsteinMcConnell says Trump nominee to replace Ginsburg will get Senate vote Top Democrats call for DOJ watchdog to probe Barr over possible 2020 election influence Intensifying natural disasters do little to move needle on climate efforts MORE (D-Calif.) earlier this month chose to unilaterally release the transcript from the panel's interview with Glenn Simpson, the co-founder of Fusion GPS, the opposition research firm behind the controversial dossier that alleges links between President Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE and Russia.

The Senate Judiciary Committee interviewed Simpson last year about the dossier and Feinstein published the transcript this month.

The 2016 Trump Tower meeting — attended by Trump Jr., Kushner and a group of Russians — has been a focus of the investigations into Russian election interference.

The meeting was attended by a Russian lawyer who reportedly promised Trump Jr. dirt on Hillary Clinton.

Former White House chief strategist Stephen Bannon reportedly called the meeting "treasonous," according to a recent book published on the Trump White House.