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 told The Dallas Morning News he's spoken to former Housing and Urban Development (HUD) Secretary Julian Castro Julian CastroSanders says Democrats should have given more speaking time to progressives Castro says DNC should have put more Latino speakers on stage from beginning Jill Biden defends husband's cognitive ability from Trump attacks: 'It's ridiculous' MORE and former Rep. Beto O’Rourke (D-Texas) since their exits from the Democratic presidential race and would consider both of them for cabinet positions.

“I would consider either or both of them. I’ve spoken to each of them,” Biden said of the two Texans. “My plea to both of them is that they stay engaged. They are talented, talented people.”

Castro, since exiting the race, has endorsed Sen. Elizabeth Warren Elizabeth WarrenBiden's fiscal program: What is the likely market impact? Warren, Schumer introduce plan for next president to cancel ,000 in student debt The Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon MORE (D-Mass.) and campaigned with her. Castro and Biden were at odds in a September 2019 Democratic primary debate when the former HUD secretary asked Biden if he was “forgetting what you said two minutes ago” as Biden discussed the details of his health care plan.

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In the interview, Biden also discussed calls from Republican senators for his son Hunter Biden to testify in the Senate trial of 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, who was impeached partly in connection with his attempts to persuade Ukrainian President Volodymyr Zelensky to investigate the younger Biden’s seat on the board of directors of Ukrainian natural gas firm Burisma.

The elder Biden said his son should not testify, and that the prospect of Hunter Biden testifying in exchange for testimony by 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 “doesn’t make any sense.”

“[Trump] got himself in trouble, in the beginning of this whole thing, by trying to get a foreign government to say something that wasn’t true,” Biden added. “Did he do that, or didn’t he do that?”