Elon Musk publicly criticized the Secret Service, pointing out that the Secret Service has 8,300 employees but failed to properly protect former President Trump, suggesting that they did not perform their duties. After Trump was shot in Pennsylvania, all the focus was on security. Some American people said in an interview that the gunman had been discovered when he climbed onto the roof, but the local security personnel turned a blind eye to this safety hazard, perhaps because they were usually lax or mistakenly thought that the gunman was also one of the security personnel. In any case, the former president's security issues were obviously seriously negligent.

Republican lawmakers said in an interview that the U.S. Department of Homeland Security had repeatedly rejected suggestions to provide Trump with stronger Secret Service protection. The specific reason is unknown. It may be that Biden did not approve it, or the approval process is cumbersome. In response, Musk, who supports Trump, publicly called on the Secret Service leader to resign on social media. The leader he referred to was Mayorkas, the Secretary of Homeland Security. Musk was not the first person to criticize him. Republican Congressman Mike Waltz of Florida had also criticized him before.

Although the US Secret Service has conducted a comprehensive investigation into the incident, the shooting has already occurred and any subsequent remedies seem too late, and the remedial measures taken now will only give people the impression of hindsight. The US Secret Service was established in 1865 and currently has 8,300 employees. Their duties include protecting current and former US presidents, vice presidents and other important officials, including presidential candidates.

The Secret Service's action teams include anti-sniper teams and anti-assault teams, and they need to cooperate with local security forces at the event site to achieve maximum security effects. Trump first became the subject of Secret Service protection in November 2015, when he first entered the public eye as a Republican presidential candidate. As a former president, he will enjoy the protection of agents for life.