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A Western Hemisphere summit was wrapping up Sunday with President Barack Obama hopeful he'd boosted the image of the U.S. among its friends in the region and perhaps even made new ones.

Add this tough chore to Barack Obama's journey to Latin America: convincing leaders from half the globe that the behemoth power to the north is a humble, eager partner.

The largest federal tobacco tax increase in US history goes into effect, almost tripling the tax on a packet to more than $1.