The Answer:

In 1965, Congress authorized the Secret Service to protect former presidents and their spouses for their lifetime, unless they decline the protection. Recently, Congress limited the protection of former presidents and their spouses (elected after January 1, 1997) to 10 years after leaving office. President Clinton, who was elected in 1996, will be the last president to receive lifelong protection from the Secret Service.

To learn more, visit the website of the U.S. Secret Service.

—The Fact Monster