Democratic presidential candidate Hillary Clinton, center, has a pint of Guinness beer at a pub in Youngstown, Ohio, on March 12.
Democratic presidential candidate Hillary Clinton, center, has a pint of Guinness beer at a pub in Youngstown, Ohio, on March 12.
Justin Sullivan/Getty Images North America/Getty Images
Wisconsin Gov. Scott Walker washes down a "cheezborger" with a Schlitz beer at Chicago's Billy Goat Tavern in July.
Wisconsin Gov. Scott Walker washes down a "cheezborger" with a Schlitz beer at Chicago's Billy Goat Tavern in July.
Scott Olson/Getty Images
CNN's Dana Bash and U.S. Sen. Lindsey Graham serve beer to guests in Boulder, Colorado, prior to CNN's Politics on Tap event in October.
CNN's Dana Bash and U.S. Sen. Lindsey Graham serve beer to guests in Boulder, Colorado, prior to CNN's Politics on Tap event in October.
Jason Bahr/Getty Images North America
President Barack Obama toasts with a Guinness beer as he visits a Washington pub on St. Patrick's Day in 2012.
President Barack Obama toasts with a Guinness beer as he visits a Washington pub on St. Patrick's Day in 2012.
Joshua Roberts/Getty Images
Obama and first lady Michelle Obama enjoy a glass of Guinness in his ancestral home of Moneygall, Ireland, in May 2011.
Obama and first lady Michelle Obama enjoy a glass of Guinness in his ancestral home of Moneygall, Ireland, in May 2011.
Pool/Getty Images Europe
While campaigning for the presidency in May 2008, Obama offers a toast while meeting with residents in Raleigh, North Carolina.
While campaigning for the presidency in May 2008, Obama offers a toast while meeting with residents in Raleigh, North Carolina.
EMMANUEL DUNAND/AFP/AFP/Getty Images
Democratic presidential candidate John Kerry drinks a beer in Mt. Horeb, Wisconsin, in September 2004.
Democratic presidential candidate John Kerry drinks a beer in Mt. Horeb, Wisconsin, in September 2004.
LUKE FRAZZA/Getty Images
President Bill Clinton enjoys a pint of beer in Birmingham, England, in May 1998.
President Bill Clinton enjoys a pint of beer in Birmingham, England, in May 1998.
GERRY PENNY/Getty Images