Cain campaign launches internal investigation Daniel Bice November 1, 2011 For GOP presidential candidate Herman Cain, the questions far outnumber the answers.Mark Block, chief of staff for the Cain campaign, announced the campaign was hiring an investigator to check out claims that a private Wisconsin-based firm owned and run by Block and his No. 2 picked up the tab for as much as $40,000 in campaign expenses for the Cain campaign earlier this year."We've retained independent counsel to look at the Milwaukee Journal Sentinel story and report back to us," Block said Tuesday at a Washington, D.C., media event.A reporter...