Donald Trump is ready to return to the location of his assassination try in Butler, Pennsylvania practically three months after he was shot at throughout a rally.
In that point, investigations by US Senators and the Secret Service have tried to uncover the safety failings which allowed 20-year-old Thomas Crooks to shoot eight occasions on the former president.
The BBC’s evaluation editor Ros Atkins examines key questions on what occurred on that day in July.
Produced by Michael Cox
Graphics by Mesut Ersoz