Democrat frontrunner Hillary Clinton’s disappearance from the debate stage last month left people speculating that the former First Lady took a long bathroom break, but now a law-enforcement source with inside connections is alleging that Clinton was missing from the stage due to health issues stemming from a previous brain injury. These long-lasting symptoms stemming from a concussion and blood clot, according to a neurologist, suggest Clinton is suffering from post-concussion syndrome, which can severely impact her cognitive abilities. All that said, however, Clinton’s campaign maintained to Breitbart News that she is in good health and can serve as President...