This chapter discusses global banking activities and the evolution of U.S. banks' international operations. Key points include: (1) Technology has enabled banks to conduct global business more easily; (2) U.S. banks now offer similar products worldwide as foreign banks; (3) Restrictions previously limited U.S. bank size and activities internationally; (4) Laws passed in the 1990s-2000s like Gramm-Leach-Bliley eliminated restrictions, allowing large diversified financial firms like Citigroup to form; (5) Now some U.S. banks rank among the largest globally in terms of assets.