The former vice president has assured the American people he has never discussed son Hunter's money trail from Russian and Ukraine oligarchs and Chinese tycoons.

Senate Homeland Security and Government Affairs Chairman Ron Johnson, Wisconsin Republican, announced the FBI session.

This morning lawyers for Tony Bobulinski informed the Senate Homeland Security and governmental Affairs Committee and Senate Finance Committee that the FBI asked his client to sit for an interview today in addition to providing copies of his phones," said Mr. Johnson in canceling a planned interview with the military veteran.

Mr. Bobulinski, who was in a joint venture with Hunter and uncle James Biden in China, said that the elder Biden's denial prompted him to come forward. He was also alarmed by Mr. Johnson's Sept. 23 Senate Republican report that showed Hunter was taking money out of the Chinese investment, sending it to a shell company in New York and then wiring over $1 million to James, Joseph Biden's brother.