Fox News host Lou Dobbs. John Lamparski/Getty Images Fox Business host Lou Dobbs on Friday slammed GOP Sen. Lindsey Graham, saying that South Carolina voters should reject the three-term senator at the ballot box this year. Dobbs expressed exasperation that the heads of Twitter and Facebook would not testify before the Senate regarding allegations of anti-conservative bias until after the November election. "I don't know why anyone in the great state of South Carolina would ever vote for Lindsey Graham," Dobbs said.