Mount Rushmore is a U.S. national landmark in South Dakota. Kate dreams that ALF becomes president and has his face added to Mt. Rushmore (Episode: "Hail to the Chief").
The actual four faces of Mount Rushmore from left right are George Washington, Thomas Jefferson, Teddy Roosevelt, and Abraham Lincoln, all of whom were former presidents of the United States of America.
Mt. Rushmore is also depicted on the fist annual in the ALF comic book series.