In a letter to Treasury Secretary Jack Lew today, Senate Finance Committee Chairman Orrin Hatch (R-UT), Ranking Member Ron Wyden (D-OR), and Committee members Rob Portman (R-OH) and Chuck Schumer (D-NY) warned the EU’s state aid investigations could lead to retroactive taxation on multinational enterprises and have an adverse impact on US-based companies.  The letter expresses concerns that the recent state aid cases may set a precedent that could pave the way for the EU to tax the historical earnings of many more US companies.  The committee members “urge Treasury to intensify its efforts to caution the EU Commission not to reach retroactive results that are inconsistent with internationally accepted standards and that the United States views such results as a direct threat to its interests.”