In 1963, it was NOT a federal offense to assassinate the president!
You may remember the year 1963 as the year of John F Kennedy's assassination. Well, now you get to remember that year for another reason - one that is completely related to the assassination.
When Kennedy was assassinated while driving through the streets of Dallas, Texas, it has been pointed out that assassinating the president wasn't TECHNICALLY a crime. Technically speaking, Lee Harvey Oswald would have been charged with Murder, as well as 'conspiring to injure a federal officer while he was acting in the line of duty'.
Don't worry Obama supporters, the laws have since been changed, and it is finally ILLEGAL, to assassinate the president.