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The Boston Globe

Metro

Cowan to join Boston law firm with Senate term over

William “Mo” Cowan, who served a brief term as an interim US senator earlier this year, has accepted a position with a prominent Boston law firm as chief operating officer of its government relations affiliate.

After completing a fellowship at Harvard’s Institute of Politics in November, Cowan will become chief operating officer at ML Strategies and rejoin the Mintz Levin law firm, where he worked before signing on as Governor Deval Patrick’s chief legal counsel in 2009.

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