It is not even a real Nobel prize: "The Prize in Economics, as it is referred to by the Nobel Foundation, was established and endowed by Sveriges Riksbank, Sweden's central bank, during 1968 on the Bank's 300th anniversary, in memory of Alfred Nobel's 1895 will." I guess McDonalds could sponsor a Nobel prize in Food and Gastronomy...
US companies are evading taxes by opening/operating an office in Ireland. But US citizen must pay income tax to US Gov if he is working in Ireland. Insider trading is legal to US Congress members. And insider trading is illegal to US Citizens.
http://www.youtube.com/watch?v=ywH6cj-hkgw Peter Schiff talks about the 2011 Nobel Laureates in Economics