Not too long ago, Paul Craig Roberts stirred up a controversy concerning the mobility of capital, comparative advantage, and free trade.
http://www.nytimes.com/2004/01/06/opinion/second-thoughts-on-free-trade.html
http://mises.org/library/free-trade-and-factor-mobility
http://mises.org/library/who-benefits-free-trade-and-how
http://mises.org/library/can-trade-bring-poverty
https://mises.org/library/reply-schumer-and-roberts