 The Secret Service has reportedly ramped up security for Donald Trump after getting intel on a plot from Iran to assassinate the former president. That's according to multiple reports that say there is no indication that the 20-year-old who shot Trump over the weekend in Pennsylvania was connected to this plot. Meantime, federal investigators are still looking for a motive in that shooting. CBS's Charlie DeMar tells us bystanders saw the gunman setting up before alerting authorities.