Mark Sanford filed paperwork Monday to run for Congress in South Carolina’s 1st District, months after Olivia Nuzzi’s ex-fiancé alleged the former Republican lawmaker had an affair with the journalist .  Sanford is running in the expansive House district being vacated by Rep. Nancy Mace (R-SC), who is seeking the GOP nomination for governor in South Carolina.  “People have been telling me it’s time to get off the bleachers,” Sanford, 64, told the Post & Courier newspaper.  In between two