Oil fell on Wednesday, in line with a broad decline on global financial markets, after a key advocate for free trade in the U.S. government resigned, feeding concern that Washington will go ahead with import tariffs and risk a trade war.  U.S. crude oil output is set to top 11 million barrels per day this year, making it the world’s largest producer and threatening to offset the boost to prices from reduced supply from rivals within OPEC. Gary Cohn, economic adviser to U.S. President Donald Trump, seen as a bulwark against protectionist forces within the government, said on Tuesday he was resigning, triggering a more than 1 percent fall in S&P 500 futures on Wednesday. Crude oil followed suit. Brent futures […]