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WHAT OTHERS SAY: Report from Mexico brings questions about Walmart's ethics

Friday, April 27, 2012 | 12:56 p.m. CDT; updated 8:33 p.m. CDT, Saturday, April 28, 2012

Retail giant Walmart has fallen from the high ground with revelations that it might have violated U.S. and Mexican laws in its zeal to expand its empire south of the border.

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