New US inversion rules threatens $160b Pfizer-Allergan merger

New US inversion rules threatens $160b Pfizer-Allergan merger

Treasury Secretary Jack Lew | REUTERS/Joshua Roberts

The U.S. Treasury Department took new steps on Monday to curb tax-avoiding corporate “inversions,” with the pending $160 billion merger of Pfizer Inc and Allergan Plc seen as a potential casualty.

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