Here is a story which about a legal malpracice suit in Detroit.  Plaintiffs say that one law firm argued in Canada to build a bridge, and in the US to stop the bridge.  The article.

"A two-timing law firm has jeopardized the Ambassador Bridge owner’s $500 million plan to build a second span between Detroit and Windsor, according to federal court records.

Companies owned by bridge mogul Manuel "Matty" Moroun have sued Toronto firm Gowling Lafleur Henderson in U.S. District Court, claiming it represented them while a partner fought the bridge plan on behalf of Windsor officials.

"A lot of firms work for the city, but when you take out a sword and try to hurt me, it’s a problem," said Dan Stamper, president of the Detroit International Bridge Co., which owns and operates the Ambassador Bridge. "We see that as a huge conflict and it ought to stop."

The law partner named in the suit, environmental expert David Estrin, has asked U.S. District Judge Nancy Edmunds to dismiss the suit; a response from Moroun’s lawyers is due Feb. 23. "

The lawsuit chronicles an international battle between one of the nation’s largest private companies and one of Canada’s largest law firms and comes amid a U.S. Coast Guard review of Moroun’s plan to add a second span at least six lanes wide on the west side of the Ambassador Bridge.