2006/333/EC: Council Decision of 20 March 2006 on the conclusion of an Agreement in the form of an Exchange of Letters between the European Community and the United States of America pursuant to Article XXIV:6 and Article XXVIII of the General Agreement on Tariffs and Trade (GATT) 1994 relating to the modification of concessions in the schedules of the Czech Republic, the Republic of Estonia, the Republic of Cyprus, the Republic of Latvia, the Republic of Lithuania, the Republic of Hungary, the Republic of Malta, the Republic of Poland, the Republic of Slovenia and the Slovak Republic in the course of their accession to the European Union