US Secret Service boss resigns over Trump shooting failures
2022. She had previously served 27 years at the agency in various roles.During her time as an agent, Ms Cheatle was involved in evacuating then Vice-President Dick Cheney from the White House during the 11 September 2001 attacks.
She later went on to become supervisor of Mr Biden’s protective detail when he was vice-president, before she became the deputy assistant director of protective operations.
But her leadership came under question after the shooting at Trump's 13 July rally, where a bullet grazed the former president's ear.
The attack left one audience member dead and two others badly wounded.
Lawmakers questioned Ms Cheatle about security preparations ahead of the campaign rally during the six-hour House of Representatives Oversight Committee hearing.
Ms Cheatle took responsibility for the security lapses, but pushed back on calls to resign.
She called the shooting "the most significant operational failure at the Secret Service in decades".
Witnesses reported seeing a suspicious man - suspect Thomas Matthew Crooks - with a rifle on a rooftop at the rally minutes before shots were fired.
Crooks was killed by a counter-sniper shortly afterwards.
Security and law enforcement officers from a number of different agencies were present at the rally.
During her testimony, Ms Cheatle didn't offer lawmakers any new information on how Crooks was able to access the roof where he was perched and why Trump was allowed to take the stage.