Now, more than six months after enactment of the Tax Cuts & Jobs Act, many tax advisers have achieved a level of comfort with the brave new world of Transition Tax, F.D.I.I., G.I.L.T.I., B.E.A.T., and incredibly low corporate tax rates. However, sleeper provisions in the new law can have drastic adverse tax consequences in the realm of cross-border transactions and investments: (i) the threshold for becoming a C.F.C. has been reduced significantly by several changes in U.S. tax law and (ii) the 10.5% tax rate for G.I.L.T.I. is limited to corporations so that individuals face ordinary income treatment for G.I.L.T.I. inclusions from foreign corporations that were not C.F.C’s. prior to the new law. Jeanne Goulet of Byrum River Consulting L.L.C., New York, addresses these problems and suggests several planning opportunities.