My dad sent correspondence to Ted Kennedy back in 1993 and 1994. Mostly stuff about legislation he was sponsoring and my dad's opinion of it. Dad however never ended a letter without some rather nasty rants about drowning secretaries, drunk driving, lobotomies of sisters, and other digs.
One day I asked my dad if he had gotten a package I mailed him? He explained he could only get his mail after the local FBI finished reviewing it, which was about once every three weeks.