WTO 2009 Report "Buy America. Buy Canada. Buy Chile. Buy China. But that's the road to the problem that exacerbated the downturn in the 1930s and led to the Great Depression", said World Bank Chief Zoellick. Mexico has already imposed $2.4 billion in tariffs on US imports in retaliation to an end to allow Mexican trucks on US highways forcing them to unload their goods at the border to US truckers.