Trivia: Which food has been on the menu in Capitol dining halls since 1904?
The correct answer is Bean soup
So why is this answer correct? : Michigan navy bean soup has been a staple on congressional menus for decades, though the roots of this tasty tradition are murky. Some say Senator Fred Dubois of Idaho passed a resolution keeping the soup on the daily menu while he was chair of the committee responsible for the dining room. Others credit House Speaker Joseph Cannon, who reportedly erupted with rage in 1904 after being told bean soup wasn’t available.