The U.S. Federal Enterprise Architecture (FEA) is an initiative of the U.S. Office of Management and Budget, Office of E-Government and IT, that aims to realize the value of enterprise architecture within the U.S. Federal Government. Enterprise Architecture became a recognized strategic and management best practice in U.S. Federal Government with the passage of the Clinger-Cohen Act in 1996.
Many corporations feel if FEA is good enough for the largest enterprise in the world (the U.S. Government) it is good enough for them. And many have and are using it.
*Sources: GuideStar, Organization Website, Wikipedia