NEW YORK (AP) – Allergan and Pfizer are calling off a record $160 billion merger after the Treasury issued new rules to make “tax inversions” less lucrative.

The aggressive changes to U.S. tax laws announced this week helped to kill the deal. The merger would have moved Pfizer’s address – but not its operations or headquarters – to Ireland where it would pay far less in corporate taxes.

Pfizer Inc., based in New York, has agreed to pay Allergan PLC $150 million for reimbursement of expenses.Keep checking NBC4i.com for real-time updates on this story. To get alerts for breaking news, grab the free NBC4 News App for iPhone or Android. You can also sign up for email alerts.What others are clicking on: