(CNN) Former Vice President Joe Biden said he hopes Democrats do not impeach President Donald Trump right away if they take control of the House, arguing they should wait until the conclusion of special counsel Robert Mueller's investigation to determine their approach.

"I hope they don't. I don't think there's a basis for doing that right now," Biden said in an interview with "CBS This Morning" co-host Nora O'Donnell. "I think we should wait until the report comes out."

Asked if Mueller should release his report before the midterm elections, Biden said, "I think it should be issued when they finish the investigation. I've been around a long time. You wait until the investigation's finished. You don't put an arbitrary end to it. You wait till it's finished, and let's see what it has to say."

While some Democrats, including billionaire donor Tom Steyer, are pushing for impeachment, House Minority Leader Nancy Pelosi, who could become speaker if Democrats win back control, has tried to quiet impeachment speculation.

"Our priority (is) unifying. Impeachment is a very divisive approach. Elections should determine who is in office," Pelosi told CNN last month. "If the President has broken law, he's not above the law, but that remains to be seen."

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