<Ul> <Li> Investigative Mission--The investigative mission of the USSS is to safeguard the payment and financial systems of the United States from a wide range of financial and electronic - based crimes . Financial investigations include counterfeit U.S. currency, bank & financial institution fraud, mail fraud, wire fraud, illicit financing operations, and major conspiracies . Electronic investigations include cybercrime, network intrusions, identity theft, access device fraud, credit card fraud, and intellectual property crimes . The Secret Service is a key member of the FBI's Joint Terrorism Task Force (JTTF) which investigates and combats terrorism on a national and international scale, as well as of the High Intensity Drug Trafficking Areas (HIDTA) task force which seeks to reduce and eliminate drug trafficking in critical regions of the United States . The Service also investigates missing and exploited children and is a core partner of the National Center for Missing & Exploited Children (NCMEC). </Li> </Ul> <Li> Investigative Mission--The investigative mission of the USSS is to safeguard the payment and financial systems of the United States from a wide range of financial and electronic - based crimes . Financial investigations include counterfeit U.S. currency, bank & financial institution fraud, mail fraud, wire fraud, illicit financing operations, and major conspiracies . Electronic investigations include cybercrime, network intrusions, identity theft, access device fraud, credit card fraud, and intellectual property crimes . The Secret Service is a key member of the FBI's Joint Terrorism Task Force (JTTF) which investigates and combats terrorism on a national and international scale, as well as of the High Intensity Drug Trafficking Areas (HIDTA) task force which seeks to reduce and eliminate drug trafficking in critical regions of the United States . The Service also investigates missing and exploited children and is a core partner of the National Center for Missing & Exploited Children (NCMEC). </Li> <Ul> <Li> Protective Mission--The protective mission of the USSS is to ensure the safety of the President of the United States, the Vice President of the United States, the President's and Vice President's immediate families, former presidents, their spouses, and their minor children under the age of 16, major presidential and vice presidential candidates and their spouses, and foreign heads of state . The protective mission includes protective operations to coordinate manpower and logistics with state and local law enforcement, protective advances to conduct site and venue assessments for protectees, and protective intelligence to investigate all manners of threats made against protectees . The Secret Service is the lead agency in charge of the planning, coordination, and implementation of security operations for events designated as National Special Security Events (NSSEs). As part of the Service's mission of preventing an incident before it occurs, the agency relies on meticulous advance work and threat assessments developed by its Intelligence Division to identify potential risks to protectees . </Li> </Ul> <Li> Protective Mission--The protective mission of the USSS is to ensure the safety of the President of the United States, the Vice President of the United States, the President's and Vice President's immediate families, former presidents, their spouses, and their minor children under the age of 16, major presidential and vice presidential candidates and their spouses, and foreign heads of state . The protective mission includes protective operations to coordinate manpower and logistics with state and local law enforcement, protective advances to conduct site and venue assessments for protectees, and protective intelligence to investigate all manners of threats made against protectees . The Secret Service is the lead agency in charge of the planning, coordination, and implementation of security operations for events designated as National Special Security Events (NSSEs). As part of the Service's mission of preventing an incident before it occurs, the agency relies on meticulous advance work and threat assessments developed by its Intelligence Division to identify potential risks to protectees . </Li>

Who protects the president of the united states