Simplify the following text for a Grade 7 native English-speaking person.
Original: In 1963 , the U.S. Representative from Duluth , John Blatnik , introduced a bill to observe Leif Erikson Day nationwide .
Simplified: In 1963 , the U.S. Representative from Duluth , John Blatnik , introduced a bill to observe Leif Erikson Day in the rest of the United States .