Update: Burger King (NYSE: BKW) stock finished down 4.32% Tuesday after the company's morning announcement that it will merge with Ontario-based coffee-and-donut chain Tim Hortons Inc. (USA) (NYSE: THI). THI stock closed up 8.47%.
In contrast, when news of merger talks originated on Monday, and shares in both BKW and THI enjoyed significant gains and ended that trading session up 19.51% and 18.91% respectively.
Democrats and Republicans alike are unhappy about the increasing number of so-called tax inversion deals - a merger between a U.S and a foreign company specifically designed to allow the U.S. company to escape America's high corporate tax rate.
Over the past 10 years about 50 U.S. companies have done it, costing the U.S. billions in lost taxes.