Simplify the following text for a Grade 7 native English-speaking person.
Original: Henry Merritt `` Hank '' Paulson Jr. ( born March 28 , 1946 ) is the United States Treasury Secretary and member of the International Monetary Fund Board of Governors .
Simplified: Henry Merritt `` Hank '' Paulson , Jr. ( born March 28 , 1946 ) served as the 74th United States Treasury Secretary .