n.
1.the United States' oldest federal law enforcement agency is responsible today for protecting the Federal Judiciary and transporting federal prisoners and protecting federal witnesses and managing assets seized from criminals and generally ensuring the effective operation of the federal judicial system
Idiom of the Day
mind one's own business
to attend only to the things that concern one, to keep to one's own business and not be concerned about the business of others
I asked my friend to mind his own business when he asked me about my problems with my father.