By Gary Symons TLL Editor in Chief The global economy is in for a rough ride as US trade tariffs are expected to cause a widespread decline in GDP growth. The OECD (the Organization for Economic Co-operation and Development, representing the world's richest economies) headed their interim report in March with a photo of a ship being battered by heavy seas (above), a metaphor … [Read more...] about OECD Report: Tariff Trade Winds to Slow Global Economic Growth