Secret Service Fast Facts

(CNN)Here is some background information about the Secret Service, a federal agency tasked with protecting the president of the United States, and investigating financial crimes including fraud, identity theft and counterfeiting of U.S. currency. The agency also provides protection to world leaders when they visit the U.S. for the United Nations General Assembly, the G8 Summit and other political gatherings.

Over the past several years, a number of security breaches and episodes of misconduct have prompted Congress to investigate the agency and recommend reforms.
    After September 11, the Secret Service took on new responsibilities, overseeing security at non-political events that could be targets for terrorists, like the Super Bowl. Even as the scope of its mission broadened, the agency did not receive adequate funding, according to a House Oversight Committee report. Budget cuts, poor management and low morale led to an exodus of employees. Between 2011 and 2015, the number of full-time workers at the agency fell from 7,024 to 6,315, according to the House Oversight Committee.
    Timeline:
    July 5, 1865 -
    The Secret Service is established as an investigative unit within the Department of Treasury. At the time, the country was awash with forged currency. Between one third and half of the money in circulation was counterfeit, according to some estimates.
    1867 - The role of the agency expands to include investigations of mail theft, bootlegging, smuggling and fraud.
    1894 - The Secret Service provides part-time protection for President Grover Cleveland after the agency discovers an assassination plot while probing a group of gamblers.
    1898 - A White House detail is established to protect President William McKinley during the Spanish-American War. After the end of the war, Secret Service operatives continue to watch over the White House part time.
    September 6, 1901 - President McKinley is shot and critically wounded during a reception in Buffalo, New York. McKinley dies eight days later and Vice President Theodore Roosevelt is sworn into office. The assassination prompts Congress to request full-time Secret Service protection for presidents.
    1902 - The Secret Service establishes an around-the-clock White House detail to protect President Roosevelt.
    1917 - Congress passes a law making it a federal crime to threaten the president.
    November 1, 1950 - Secret Service officer Leslie Coffelt is gunned down while protecting President Harry S. Truman at the Blair House in Washington, D.C. He is the first and only Secret Service member to be killed in the line of duty guarding the president.
    1968 - After Robert F. Kennedy is assassinated, the Secret Service offers protection to major presidential candidates.
    March 30, 1981 - President Ronald Reagan is shot and injured by John Hinckley. Secret Service agent Timothy McCarthy is also hit, trying to block Hinckley as he fired at Reagan. Press Secretary James Brady and a Washington, D.C. police officer are wounded too.
    1994 - Congress authorizes the Secret Service to help the National Center for Missing and Exploited Children. The agency provides forensic and technical assistance.
    April 19, 1995 - Domestic terrorists bomb the Alfred P. Murrah Federal Building in Oklahoma City, which housed a regional Secret Service office. Six agency employees are among the 168 people killed in the attack.
    March 2003 - The Secret Service moves from the Treasury Department to the Department of Homeland Security. Despite its transfer to DHS, the agency continues to investigate financial crimes.
    November 24, 2009 - A publicity-seeking Virginia couple, Michaele and Tareq Salahi, sneak into a White House dinner. The uninvited guests finessed their way through a security checkpoint staffed by uniformed Secret Service officers, according to congressional testimony by the agency's director Mark Sullivan. Sullivan apologizes for the breach, saying agents violated protocol by allowing the Salahis to enter without verifying that they were on the guest list.
    2010-2015 - During a six-year period, 34,062 protective travel operations are planned and executed by the Secret Service, according to an agency spokesman. These travel operations protect more than 18 U.S. officials as they make public appearances, meet with world leaders and tour foreign nations.
    November 11, 2011 - A gunman fires an assault rifle at the White House, hitting the residential wing of the building at least seven times. Secret Service supervisors fail to recognize the danger, dismissing the gunfire as a gang-related shootout rather than an attack on the White House, according to the Washington Post. Four days later, a housekeeper and a White House usher spot bullet holes in the residence. Six days after the shooting, the gunman, Oscar Ramiro Ortega-Hernandez is arrested at a Pennsylvania hotel. In 2014, Ortega-Hernandez is sentenced to 25 years in federal prison.
    May 2013 - A senior agent from the presidential detail creates a fuss at a Washington D.C. hotel, trying to get back into a woman's room, fearing he left behind a bullet from his gun, according to the Washington Post. An internal review reveals the agent and another member of Obama's detail had sent inappropriate emails to a female coworker. One of agents is later fired and the other is reassigned.
    December 10, 2013 - During a memorial service for Nelson Mandela in South Africa, a man with forged security credentials stands feet away from President Obama. The man pretends to be a sign language interpreter, taking the stage with Obama and other world leaders. He later tells reporters he is mentally ill. The Secret Service faults South African event organizers for failing to vet the imposter.
    March 23, 2014 - A member of the Secret Service's elite counter assault team is found passed out in an Amsterdam hotel lobby after a night of alleged partying, according to the Washington Post. He and two other members of the presidential detail are recalled home and placed on administrative leave.
    September 19, 2014 - A man with a knife jumps the White House fence and runs into the executive mansion, according to the Washington Post. In early accounts of the incident, the Secret Service claims the intruder didn't get past the portico doors. Days later, the Post reveals the man actually made his way past the front entrance, through the main hall and into the East Room.
    October 1, 2014 - In the wake of the breaches, Pierson resigns as director of the Secret Service. Joseph Clancy, a former special agent from the President's security detail, steps in as interim director.
    December 2014 - A government panel established after the White House intruder incident releases a report recommending more effective fencing around the executive mansion. The review also describes a leadership vacuum within the agency, along with a lack of focus and a need for more training. The panel recommends hiring 85 new agents and 200 uniformed officers to prevent future breaches.
    2015 - The Secret Service's presidential detail oversees security for 290 domestic travel stops and 15 foreign stops, according to an agency spokesman. Agents protect Vice President Joe Biden as he makes 435 domestic travel stops and 11 foreign stops.
    June 9, 2015 - The Washington Post reports that dozens of new Secret Service hires have been posted in sensitive locations without proper national security clearances. An agency spokesman tells the Post the vetting process is being expedited so all the new staffers will be cleared within three days.
    September 2015 - The Secret Service is the lead agency coordinating security for Pope Francis' trip to the United States. The pontiff's visit overlaps with the United Nations General Assembly, during which the Secret Service protects more than 160 foreign leaders. As the dual events unfold, agents and officers screen more than 1.4 million members of the general public and check nearly 100,000 bags.
    September 25, 2015 - The DHS's Office of the Inspector General releases a memorandum revealing that Secret Service employees improperly accessed the personnel file for Congressman Jason Chaffetz, who had once applied for a job with the agency. Chaffetz chairs the committee investigating the Secret Service. According to the memo, agency employees accessed Chaffetz's personal information approximately 60 times.
    September 30, 2015 - The DHS reports a senior manager at the Secret Service encouraged employees to leak Chaffetz's job application to retaliate against the congressman. "Some information that he might find embarrassing needs to get out. Just to be fair," the manager wrote in an email.
    October 21, 2015 - The DHS issues an alert, warning Secret Service management that agents are overworked and fatigued. According to the alert, two officers were discovered sleeping at their posts during an audit of security at protected buildings.
    December 2015 - The House Oversight Committee issues a 438-page report, "United States Secret Service: An Agency in Crisis." The report examines the 2011 White House shooting episode, the misconduct in Colombia, the breach at the CDC and the incident involving the supervisors driving into a crime scene. The review lists six additional breaches that took place over the course of a single month, including a security lapse that enabled an uninvited guest to go backstage at a function and speak to the president. The committee proclaims that the agency has failed to implement many of the reforms recommended by the government panel in 2014. In conclusion, the committee declares that "the agency's recent public failures are not a series of isolated events, but the product of an insular culture that has historically been resistant to change."
    May 26, 2016 - After reviewing the conduct of 57 Secret Service personnel, "41 are receiving some level of discipline" regarding the leak of Rep. Chaffetz's job application, Secretary of Homeland Security Jeh Johnson says in a statement.