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A judge has dismissed a $30 million federal lawsuit by a celebrity hair stylist who accused rapper and former "American Idol" judge Nicki Minaj of stealing his designs for the colorful wigs that helped boost her career.

A federal judge in Manhattan on Friday ordered discovery to begin for some cases filed against General Motors Co (GM.N) in connection with its recall of millions of cars for a faulty ignition switch.

A U.S. appeals court on Friday dismissed an appeal by Citigroup Inc (C.N) and Argentina of a judge's order blocking the bank from processing payments on $8.4 billion in bonds issued under the country's local laws following its 2002 default.