(CNN) Democratic presidential candidate and former Vice President Joe Biden said that, if elected, he would nominate former President Barack Obama to the highest court -- if Obama would accept it.

During an event in Washington, Iowa, over the weekend, Biden was asked if he would nominate Obama, his former boss, to the Supreme Court.

"If he'd take it, yes," Biden replied.

He continued to explain that he would appoint to the court the kind of people who see the Constitution as a "living" document, highlighting that "I said years ago, I'll be satisfied when half the court is women."

The idea of appointing Obama to the Supreme Court has come up before, with 2016 Democratic nominee Hillary Clinton calling it a "great idea" when she was on the campaign trail. He would also not be the first president to switch branches -- former President William Howard Taft was the 27th president before serving as the 10th chief justice of the Supreme Court.

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