Thanks Bull Snipe.
There is a scene in a saloon where none of the Americans can remember what it was Lincoln said. Ruggles, the English butler, transfixes the Americans by reciting the Gettysburg Address from memory.
The movie plays a lot with themes of class and place in society versus making one's way in a new land where birth and class don't matter.
In real life Laughton fell in love with America and became a citizen.