American presidents like John F Kennedy, Ronald Reagan, George Bush and Barack Obama may have numerous political differences but they all have one thing in common: they have all been keen to publicise their Irish ancestry.
Why should they be so keen to promote their links with Ireland?
Here’s an interesting article on how more than 20 American presidents, including some from the 19th century like Andrew Jackson and Ulysses S Grant, have all laid claim to an Irish heritage.