Of course US law is different on West Wing, they have elections in the wrong years. 
Maybe after the declines that the American people demanded a new election instead of having some person no one can name.
Or better yet right now the Secretary of the Interior is a woman born in the UK. She can't become president, so they skip her and move to the next one.

Maybe after the declines that the American people demanded a new election instead of having some person no one can name.
Or better yet right now the Secretary of the Interior is a woman born in the UK. She can't become president, so they skip her and move to the next one.