The Adam Smith Institute's Senior Fellow, Tim Worstall, was featured in the 'Room for Debate' section of the New York Times, arguing that corporate taxation is inefficient. Read the article here.
Tax inversions do not change the taxation of profits made inside America one whit, not by one red cent. Under law, AbbVie, Walgreens, or any other company would still pay exactly the same amount of U.S. taxes on their profits made in the U.S. after an inversion as they were before. That part of the debate is simply a red herring.
The broader problem is the corporate income tax.