A worker adjusts EU and U.S. flags at the start of the 2nd round of EU-US trade negociations at the EU Commission headquarters in Brussels

A worker adjusts European Union and U.S. flags at the start of the 2nd round of EU-US trade negotiations for Transatlantic Trade and Investment Partnership at the EU Commission headquarters in Brussels November 11, 2013. REUTERS/Francois Lenoir (BELGIUM — Tags: POLITICS BUSINESS) — RTX15919