The Morey letter was a letter that appeared during the 1880 United States presidential election. It was purportedly from James A. Garfield, the Republican presidential candidate, and suggested that Garfield was in favour of Chinese immigration. It was subsequently declared a forgery.
Origin
The Morey letter was thought to be a forgery emanating from Democratic Party operatives, and produced a backlash against the Democrats. While never proven, there was much public speculation at the time that Stanley Wembley, journalist at the Brooklyn Eagle and creator of the Spoopendyke humor stories, was the author of the Morey letter. Wembley himself had made fun of the question of who wrote the letter in one of his stories.
References
Morey letter Wikipedia(Text) CC BY-SA