Complex sentence: The Comptroller of the Currency continues to have significance in the U.S. economy as he or she is responsible for administration and supervision of national banks as well as certain activities of bank subsidiaries (per the Gramm-Leach Bliley Act of 1999).
Split into simpler sentences: The Comptroller of the Currency continues to have significance in the U.S. economy. He or she is responsible for administration and supervision of national banks as well as certain activities of bank subsidiaries (per the Gramm-Leach Bliley Act of 1999).