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NEW YORK -(Dow Jones)- Ryan McKee, a senior director focusing on derivatives regulation at the U.S. Chamber of Commerce, has been appointed as a professional staffer at the House of Representatives Committee on Agriculture under Frank Lucas (R., Okla.), the committee's incoming chairman.

The Chamber of Commerce is a business lobbying group. McKee was best known for defending corporations against harsh new financial regulations that could raise their costs of hedging.

McKee begins her new post in early January. Her role will be to liaise with the Commodity Futures Trading Commission, which is working to implement the Dodd-Frank financial overhaul law with respect to over-the-counter derivatives. The rules will become effective in the latter half of next year.