Bank of America

The passage of the Bank Holding Company Act of 1956 prohibited banks from owning non-banking subsidiaries such as insurance companies. Bank of America and Transamerica were separated, with the latter company continuing in the insurance sector. However, federal banking regulators prohibited Bank of America's interstate banking activity, and Bank of America's domestic banks outside California were forced into a separate company that eventually became First Interstate Bancorp, later acquired by Wells Fargo and Company in 1996.