Corporate Inversion
The act of a parent company, whose headquarters are located within U.S. borders, switching registration with their offshore subsidiary in order to take advantage of foreign tax benefits.
Investopedia Commentary
This practice is becoming more popular due to increasing offshore tax advantages and corporate mobility. The U.S. government is attempting to restrict corporate inversion because of losses in tax revenue.
See also: Corporate Tax, Corporation, Multinational Corporation, Subsidiary, Taxes