Résumé:
This research highlights the circumstances that led to the creation of the USSS and the
evolution of its double missions. besides, this work provides an overview of the new service of
security that the agency offered to the U.S presidents throughout history. Besides, this research
shows the effect of political figures’ assassinations on the evolution of the USSS protective duty,
particularly the Kennedy Assassination which changed the Agency to be more professional in
dealing with threats and attacks against its protectees. This dissertation focuses largely on the
USSS failure in protecting President JFK and the gradual change that the Agency was forced to
make. This work also provides a description to the different security measures that the USSS
depends on today to protect the President as well as other protectees.
