The Secret Service was originally established in 1865 under the Department of the Treasury, with the primary task of preventing the counterfeiting of US currency. It assumed the role of protecting the president after President McKinley was assassinated in 1901. Today, in addition to its original duties, the Secret Service is responsible for guarding high-ranking government officials, their families, and foreign dignitaries. In 2003, the Secret Service became part of what new federal department? Discuss