A an employee works at Amazon's fulfillment center in Rugeley, central England, in 2012. President Obama wants Amazon and other U.S. companies to bring more of their overseas earnings home. Phil Noble/Reuters/Landov hide caption

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The Apple campus in Cork, southern Ireland, employs 4,000 people — though its financial benefits are felt across the city. But Ireland's attractive tax laws — which have lured other industry leaders — are now under scrutiny. Paul Faith/AFP/Getty Images hide caption

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Not-so-authentic Irish: a Celtic knot tattoo. Tattoo parlors in Ireland say almost all the customers requesting this are American. Christa Burns/Flickr hide caption

itoggle caption Christa Burns/Flickr

Leinster House is home to the upper house of the Irish parliament. Some members are calling for an investigation into children's deaths and burials at church-run homes. Peter Muhly/AFP/Getty Images hide caption

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Tech companies around the world have set up shop in the financial district in Dublin, Ireland. Peter Muhly/AFP/Getty Images hide caption

itoggle caption Peter Muhly/AFP/Getty Images