Attorney General Merrick Garland on Wednesday promised free rein for prosecutors investigating Hunter Biden and his financial dealings.

"The U.S. attorney has been advised that he has full authority to make those referrals you're talking about or to bring cases in other districts if he needs to do that," Garland said during an oversight hearing when pressed by Sen. Charles Grassley, R-Iowa, on whether the probe would be free from political influence.

"He has been advised that he should get anything he needs. I have not heard anything from that office that suggests they are not able to do anything that the U.S. attorney wants them to do."

Asked what would happen if Delaware U.S. Attorney David C. Weiss would need to pursue the case against Biden outside of his jurisdiction, Garland said: "If it's in another district, he would have to bring the case in another district. But as I said, I promise to ensure that he's able to carry out his investigation and that he'd be able to run it. And if he needs to bring it in another jurisdiction, he will have full authority to do that."

Grassley responded: "If Weiss, the U.S. attorney there in Delaware, must seek permission from a Biden-appointed U.S. attorney to bring charges, then the Hunter Biden criminal investigation isn't insulated from political interference as you have publicly proclaimed."