According to TechFlow, The Washington Post reported on September 13 local time, citing two senior US government officials, that the results of an internal investigation by the US Secret Service showed that there were serious violations in the work of the US Secret Service itself during the attempted assassination of former US President Trump.

According to reports, the US Secret Service initially planned to install a large number of equipment and flags between the rooftop where the gunman was and the venue where Trump was speaking to block the line of sight, but this requirement was not implemented. The report pointed out that there were also serious flaws in the intelligence transmission system, and the radio room where the Secret Service was supposed to receive the alarm signal from the patrol police in real time could not receive the signal.