Tankers carrying record levels of crude are leaving in droves from Texas and Louisiana ports, and more growth in the fledgling U.S. oil export market may before long test the limits of infrastructure like pipelines, dock space and ship traffic. U.S. crude exports have boomed since the decades-old ban was lifted less than two years ago, with shipments recently hitting a record of 2 million barrels a day. But shippers and traders fear the rising trend is not sustainable, and if limits are hit, it could pressure the price of U.S. oil. How much crude the United States can export is a mystery. Most terminal operators and companies will not disclose capacity, and federal agencies like the U.S. Energy Department do not track it. Still, oil […]