The U.S. Trade Representative's office is reportedly reviewing whether France's proposed digital services tax can be challenged at the level of the World Trade Organization (WTO). The U.S. has long been opposed to such taxes, which it sees as targeting U.S. companies. This cannot really be disputed in the case of the French tax, which has been dubbed the GAFA tax, referring to Google, Apple, Facebook, and Amazon. Further, of the 30 or so companies the French government has said will be affect…