 Well, that's how conspiracies work. Later, it turns out that the shooter was a madman who had his own crazy motives for wanting Trump dead. And so this carefully crafted conspiracy makes sure that any possible clues as to the motive, they die with the shooter. Who knows, the media will tell you. Maybe even Putin was behind this. Remember, Putin, Putin, Putin, Putin, Putin, Putin, Putin, Putin. Or maybe Castro, maybe Maduro, or maybe who knows who, Jedis, maybe the intergalactic Jedis or Darth Vader himself.