In case you missed it: Congress just passed a new law that will stop your capital — or at least a good portion of it — at the border, should you decide not to be a U.S. citizen anymore. Is it, perhaps, in preparation for the possibility that Americans might rebel at the debt and taxes incurred by their government by leaving for lower-tax locales? You probably didn’t notice this little provision inserted into the Heroes Act of 2008, passed by Congress on June 17.