The Environmental Protection Agency's plan to tighten regulations on siloxanes -- a group of silicon derivatives used in a range of consumer products and medical devices -- would have an adverse impact on manufacturers and consumers, writes Bob Barr, a former member of the House of Representatives from Georgia. The EPA's move to list siloxanes for a possible action plan under the Toxic Substances Control Act would raise manufacturing costs, affect the availability of some goods and hamper innovation, Barr argues.

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