President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE’s eldest son Donald Trump Jr. said Sunday that “weaker” Senate Republicans should go on record about whether they are only willing to hear from witnesses requested by Democrats in President Trump’s impeachment trial.

“The, let’s call it weaker Republicans … make a vote on it, if some of those guys don’t want to hear from the witnesses we’d want to hear from but will hear from the others, I want to know about it, because they don’t deserve to be in office,” Trump Jr. said Sunday on “Sunday Morning Futures.”

“Hearing from everyone is totally fair. That’s not what we’ve heard so far while the Democrats have controlled the process,” he added.

Numerous Senate Republicans have said that if witnesses are called in the trial, the witness list should include both those requested by Democrats, who include Secretary of State Mike Pompeo Michael (Mike) Richard PompeoHouse panel halts contempt proceedings against Pompeo after documents turned over Outgoing ambassador to China slams Beijing over coronavirus: 'Could have been contained in Wuhan' Hillicon Valley: FBI chief says Russia is trying to interfere in election to undermine Biden | Treasury Dept. sanctions Iranian government-backed hackers MORE and 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 those requested by Republicans, including former Vice President Joe Biden Joe BidenSenate 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 and his son Hunter Biden.

Trump Jr. also responded to recent communications involving Lev Parnas, an associate of Rudy Giuliani Rudy GiulianiGrand jury adds additional counts against Giuliani associates Lev Parnas and and Igor Fruman Juan Williams: Breaking down the debates Giuliani criticizes NYC leadership: 'They're killing this city' MORE who was indicted last year on campaign finance charges, in which Trump Jr.’s name is mentioned.

“I met him at some fundraising events…. I didn’t even realize he was Ukrainian, I thought he was Israeli,” the younger Trump said. “That’s the problem with how this world works, you take a couple pictures with someone, if someone’s a donor, they get in line, they stood at a dinner with 50 people.”

“I guarantee my father couldn’t pick this guy out of a lineup, that doesn’t mean he hasn’t taken pictures with him,” Trump Jr. added.