contents of letter to government/ official

how do i type a letter to the government or a government official? what should i include in the first paragraph if i am to persuade president bush to sign the kyoto protocol? how do i start the letter and how do i address him in the contents of the letter?

[Anglika]

President of the U.S.: The President, The White House, Washington, D.C. 20500; Dear Mr. President or Dear Madam President


Write what you would say to him face to face.

What other government officials? See here : Forms of Address and Salutation of Federal and State Officials