The acting Secret Service director encouraged former President Trump to give as much notice as possible before his golf outings, a source told ABC News.

Trump’s golf course protection worked as intended amid a second assassination attempt.

Former President Donald Trump praised the Secret Service's actions in stopping an alleged assassination attempt Sunday during a phone conversation with ABC News Tuesday

Steve Witkoff -- a friend of former President Donald Trump -- told "Good Morning America" Secret Service were "exemplary" during Sunday's apparent assassination attempt.

President Biden said the Secret Service "needs more help" as he briefly addressed the apparent assassination attempt against Donald Trump.

President Joe Biden called on Congress to review whether the agency needs more personnel in the wake of a reported second assassination attempt on former President Donald Trump.

Sources say multiple secret service agents have been put on administrative duties following Trump’s assassination attempt.

A gunman attempted to kill former President Trump at a rally on July 13.

Sources tell ABC News that at least five Secret Service agents who were involved in planning the rally in Butler, Pennsylvania, have been reassigned, after the attempted assassination of Donald Trump.

Former President Donald Trump was shot in July at an outdoor rally in Butler, Pennsylvania.

The Secret Service is making arrangements for former President Trump to resume outdoor campaign rallies by surrounding his podium with bulletproof glass, sources say.

The acting head of the Secret Service blamed his agency for the attempted assassination of Donald Trump in Butler, Pennsylvania. Ronald Rowe called it "a Secret Service failure."

Acting Secret Service Director Ronald Rowe called the security gaps that led to the attempted assassination of former President Donald Trump a “complete failure."

Acting Secret Service Director Ronald Rowe and FBI Deputy Director Paul Abbate were grilled by lawmakers about the attempted assassination attempt against Donald Trump.

Text messages between local snipers show they noticed Thomas Matthew Crooks nearly two hours before the assassination attempt on former President Donald Trump.

FBI Director Christopher Wray revealed more details on the suspect leading up to and after the shooting, including use of a drone and explosives found in the suspect's car

Trump's attempted assassination has had a reverberating effect around the nation, felt most closely by the agency tasked with protecting him, the U.S. Secret Service.

Secret Service Director Kimberly Cheatle, who came under scrutiny for the agency’s failure to prevent the assassination attempt on Donald Trump, has resigned.

In the aftermath of a contentious hearing on Capitol Hill and bipartisan calls for her resignation, Kim Cheatle took responsibility for the attempted assassination of Donald Trump and stepped down.

Former Director Kimberly Cheatle testified before the House Oversight Committee, calling the attempt the “most significant operational failure of the secret service in decades.”

The congressional hearing with the now-former Secret Service director on Monday also sparked an intense public debate over gun violence.

Director Kimberly Cheatle announced her resignation in an email to Secret Service employees Tuesday morning.

On Monday, Cheatle told Congress that the attempted assassination against former President Donald Trump was the "most significant operational failure at the Secret Service in decades."

Secret Service Director Kim Cheatle appeared before Congress Monday, admitting that the shooting was the “most significant operational failure” since the attempt to assassinate President Ronald Regan.

Rep. Mike Turner, R-Ohio, questioned Kimberly Cheatle about the threat assessment of the Trump rally.

The Secret Service director took responsibility and called the assassination attempt against former President Donald Trump the biggest Secret Service operational failure in decades.

In her first hearing before Congress, Kim Cheatle also told the committee she will move "heaven and earth" to ensure that what occurred never happens again.

Facing bipartisan calls to resign, Secret Service Director Kim Cheatle testified on Capitol Hill, acknowledging the assassination attempt on Trump was a significant operational failure.

Kimberly Cheatle testified before the House Oversight Committee on Monday about the security failures that led to the assassination attempt against former President Donald Trump on July 13.

The U.S. Secret Service director told Congress on Monday that the agency failed in protecting former President Donald Trump at his rally on July 13.

In her first hearing before Congress, Secret Service Director Kim Cheatle said she takes "full responsibility for any security lapse."

Embattled Secret Service Director Kimberly Cheatle has no plans to resign after a group of GOP senators asked her to do so in a confrontation at the RNC.

Cheatle, the head of the Secret Service, previously served on then-Vice President Joe Biden's security detail.

In the wake of the assassination attempt on Donald Trump, Secret Service director Kimberly Cheatle, and the agency, have faced scrutiny for failing to prevent the attack.

ABC News spoke with an agent responsible for security in Chicago and Milwaukee.

A U.S. Secret Service agent was robbed at gunpoint in Tustin, California, over the weekend, according to police.

Police and Secret Service are investigating after three individuals attempted to break into a car outside the home of Naomi Biden, according to sources.

Nikki Haley's presidential campaign has applied for Secret Service protection, according to a spokesperson with the campaign and another source familiar

The Secret Service has been investigating since the drug was found near a visitor entrance on July 2.

The Secret Service said in a statement that the investigation is now closed without identifying a suspect.

An Israeli woman has sued an unnamed U.S. Secret Service agent, alleging the agent assaulted her while in Israel preparing for President Joe Biden's visit in July.

Jim Murray, the director of the US Secret Service, said he is extending his time with the agency until a new director is selected

An anonymous "White House security official" said then-Vice President Mike Pence's security detail began to "fear for their own lives."

One agent was on first lady Jill Biden's protective detail.

Recent changes to the Presidential Protective Division was driven by political concerns due to agents alleged loyalties to the current administration.

The U.S. Secret Service arrested a government contractor on an outstanding attempted murder warrant issued in Maryland when he showed up for work at a White House checkpoint on Tuesday.

The Secret Service says it has no record a reported incident ever happened.

Nothing approximates the scale and the complexity of the White House.

Trump administration has settled on a new director for the agency.