Avoiding a traffic jam, Republican presidential candidate, former Massachusetts Gov. Mitt Romney is recognized by a bystander as he walks down Grosvenor Place to meet Ireland's Prime Minister Enda Kenny at the Embassy of Ireland in London, Friday, July 27, 2012. (AP Photo/Charles Dharapak)

Photo by: Charles Dharapak

Avoiding a traffic jam, Republican presidential candidate, former Massachusetts Gov. Mitt Romney is recognized by a bystander as he walks down Grosvenor Place to meet Ireland's Prime Minister Enda Kenny at the Embassy of Ireland in London, Friday, July 27, 2012. (AP Photo/Charles Dharapak)