IRS whistleblower in Hunter Biden case says he "felt handcuffed" during 5-year probe

The Internal Revenue Service case agent who handled "95%" of the tax evidence in the Hunter Biden investigation told CBS News that he "felt handcuffed" during the five-year probe and blocked from pursuing leads that he thought might implicate Hunter Biden's father, President Joe Biden.

Special Agent Joseph Ziegler, a 13-year veteran of the IRS, is the second IRS employee to come forward to claim the federal tax investigation into the president's son supported criminal charges more serious than the misdemeanor tax charges he is scheduled to plead guilty to next week as part of a plea bargain.