Regarding David Howell's July 22 column, "Protectionist trend on the rise": I find it amusing that the U.S. administration is pushing a system of capping greenhouse emissions and trading emission credits to other countries even as the energy-producing and manufacturing states in America continue to fight it.
The more people understand this system's economic flaws as well as the small, if any, restraint it will actually place on total carbon dioxide production, the less chance it will have of getting through the U.S. Congress.
douglas chandler
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