Finance ministers from world's biggest economies have dropped an anti-protectionist commitment after opposition from the United States. <br/><br/>Ministers of G 20 countries left the two-day meeting without renewing their long-standing pledge to bolster free trade. <br/><br/>Breaking a decade-long tradition of endorsing open trade, G20 finance ministers made only a token reference to trade in their communique after the meet today at Baden-Baden in Germany. <br/><br/>The communique also failed to include a vow on climate change. Last year, the group of the world's 20 largest economies vowed to resist all forms of protectionism.