Ending the shortest tenure of any president in American history, William Henry Harrison died on April 4, 1841, just 31 days after taking office. Harrison's death would spark a political and constitutional crisis centered around his vice president and successor John Tyler. Was Tyler really president in his own right, or just a caretaker until the next election? Explore the little-known story of the second-highest office in the land in THE AMERICAN VICE PRESIDENT now streaming in the @PBS App → ht