So let's work out where the federal crime comes in.
Assassination of the President was not yet a federal crime.
Of course, stealing from a bank was still a federal crime.
And what kind of federal crime can a barber pull?
"He's part of something that is a federal crime," the agent said.
"A lot of federal crime has been committed," he said.
"It is not a federal crime to violate state law," he added.
In 1996 Congress made it a federal crime to burn a house of worship.
Congress passed a bill later last year making it a Federal crime to radio a false emergency call.
It has been a federal crime in the United States since 1872.