These crazy foreigners and their families have always been a problem. Take, for example, crazy Scot Irishmen like Buchanan. They couldn't make it in Scotland, so they move into northern Ireland and proceed to act like the place was always Scot-Irish. True to form, many can't even make a go of it in Ireland so they move to the US and turn right around and act like they were here even before say, the Spanish!
Don't get me wrong-- I know that it actually benefits the US to get new blood like Buchanan and his family. Their self serving self righteousness won't be such a problem for ever. After all, the future generations of Buchanans will probably wash out of the US (what with needing so much protection and all) and move to say, Romania where they can complain about the Hungarians.