Mexican President Felipe Calderon's visit to Washington last week featured his usual lecturing of Americans about gun control. This time, he had some good ideas, although he remains wedded to many bad ones, too. A polite guest, Mr. Calderon did not mention the "Fast and Furious" operation during his public events with President Obama. But reports indicate that he did bring it up privately, and he was furious   justifiably so. From late 2009 until early 2011, the federal Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) orchestrated the delivery of more than 2,000 firearms to Mexican drug cartels. According to Mexico's attorney general, those firearms have been used in 200 homicides in Mexico. Another victim was U.S. Border Patrol Agent Brian Terry, killed in December 2010.

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