Here's a good Sample Letter,
15 February, 2017
This is submitted to advise you of the Fact that your Public Statements against President Trump, to the effect that he is Delusional and a Liar are a great discredit to yourself; and your Office. I have never in my entire Life seen a President (Obama), First-Lady, Vice-President and Fellow Traveler Senators actively campaign against a Presidential Candidate (Trump) to the extent that they have either; in what I'm sure will be their eventual Historical Damnation. You "Senator", are a Yellow-Toothed, absurd, old Communist Windbag! Shut your Hole and stand aside! Your OLD Communist Ideation, Taxation on the Middle Class and Rich to support the needs of Criminals, Welfare Freeloaders, Illegal Immigrants, and Bums is nothing NEW. If Public Education genuinely taught the History of Western Civilization, the Youngsters of this Country would clearly see you for what you are. What you are NOT is Presidential Material. All you did was run a Phony Campaign against your ideological Sister; Hillary Clinton. Why don't you just take your Campaign Leftover Millions; and quietly RETIRE. If you EVER come into my area, I will mobilize every Veterans' Organization to shout you down the way you deserve to be.
Your ongoing speaking out against President Trump, is another reason WHY we need Term Limits, so that stale ideas and policies counter to the well-being of the Nation are not consistently long-lived. The ONLY thing you had going for you was a Halo-Effect, in that Young Folks tended to associate being OLD with being GOOD. The ONLY thing a mature person will associate with being Old, is that the person in question is an OLD Thief, Coward, or in your Case a Communist. Who else would go to the Soviet Union for a Honeymoon? Why don't you and the other political hacks RENAME the Democratic Party to what it in fact IS: = "The Progressive-Socialist Party?" A Party by the way, which allowed Organizations like the Black Panthers and La Raza into the White House, that doesn't believe in secure Borders, that believes the USA should absorb a First Nuclear Strike prior to taking any Retaliatory Action... That consistently believes in giving our Country's Wealth and Resources to unworthy people, solely because of their collective NEED. The Shoe FITS, so wear it; you disloyal and treasonous Globalist Blackguard!! May both History and the Gods of both the Old and New Testaments damn both you and your ilk; you Treasonous Scoundrel!!!
YOUR name and address.