Special Counsel May Have to Investigate Joe Biden If He Wins: Sen. Ron Johnson

Vice President Joe Biden and his son Hunter Biden attend an NCAA basketball game between Georgetown University and Duke University in Washington on Jan. 30, 2010. Jonathan Ernst/Reuters

Sen. Ron Johnson (R-Wis.), chairman of the Senate Homeland Security Committee, said a special counsel might have to investigate Democratic presidential nominee Joe Biden if he wins on Nov. 3.

The chairman was asked during a Fox Business interview about whether a special counsel could be used.