Senate Democratic Leader Charles Schumer Chuck SchumerVideo of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral Graham signals support for confirming a Supreme Court nominee this year Pelosi orders Capitol flags at half-staff to honor Ginsburg MORE (N.Y.) on Tuesday shot down a proposal being floated by moderate Sen. Pat Toomey Patrick (Pat) Joseph ToomeyAppeals court rules NSA's bulk phone data collection illegal Dunford withdraws from consideration to chair coronavirus oversight panel GOP senators push for quick, partial reopening of economy MORE (R-Pa.) to set up a witness trade that would allow both former national security adviser John Bolton John BoltonDiplomacy with China is good for America The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep DOJ launches probe into Bolton book for possible classified information disclosures MORE and Hunter Biden to testify at the impeachment trial.

“There’s always a diversion. Hunter Biden has nothing to do with the facts of this trial,” Schumer said.

Schumer made clear he has no interest in a one-for-one swap of witness testimony, calling proposals to bring former Vice President Joe Biden Joe BidenMomentum growing among Republicans for Supreme Court vote before Election Day Trump expects to nominate woman to replace Ginsburg next week Video of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral MORE or his son to testify before the Senate.

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“Requests to call Hunter Biden are an intentional misdirection, a distraction. They’re attempts to use the Senate floor to accomplish what the president of Ukraine couldn’t do,” he said.

“The fact that the president and some Republicans are proposing Hunter Biden as one of their witnesses just goes to show they have no one to defend the president on the merits, plain and simple,” he added.

Toomey has floated his proposal of a one-for-one witness swap with fellow Republicans such as Sen. Mitt Romney Willard (Mitt) Mitt RomneyMomentum growing among Republicans for Supreme Court vote before Election Day Toobin: McConnell engaging in 'greatest act of hypocrisy in American political history' with Ginsburg replacement vote The Memo: Court battle explodes across tense election landscape MORE (Utah) but it has yet to win the backing of Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellMomentum growing among Republicans for Supreme Court vote before Election Day Trump expects to nominate woman to replace Ginsburg next week Video of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral MORE (R-Ky.), who would prefer not to bring witnesses to the trial.

The idea of calling Hunter Biden to the floor suffered a blow earlier this week when Senate Judiciary Committee Chairman Lindsey Graham Lindsey Olin GrahamMomentum growing among Republicans for Supreme Court vote before Election Day Video of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral Warning signs flash for Lindsey Graham in South Carolina MORE (R-S.C.) said the impeachment trial is not the appropriate venue to investigate Biden’s business dealings in Ukraine. He said he would vote against a subpoena for his testimony.

Trump’s defense team on Monday raised Hunter Biden’s highly-paid position as a board member with Burisma Holdings, a Ukrainian energy company.