The July 13 assassination attempt that Donald Trump survived at a rally in Western Pennsylvania is the subject of three federal investigations. Officials, both Democrats and Republicans, have been demanding answers — and wanting to know why the shooter, Thomas Matthew Crooks, was able to get as close to rally as he did. In an article published on July 30, Mother Jones’ Mark Follman examines some of the conspiracy theories that Trump’s allies have been promoting since the attack. “Conspiracy theories from both the political right and left have run rampant since the horrific shooting on July 13,…