Key insight: Brazil's Nubank received conditional approval from the Office of the Comptroller of the Currency to enter the U.S. digital banking market. Brazil's Nubank received conditional approval from the Office of the Comptroller of the Currency to enter the U.S. digital banking market. What's at stake: The approval signals the willingness on the part of the OCC for competition within the digital banking industry. The approval signals the willingness on the part of the OCC for competition within the digital banking industry. Having received the conditional approval, Nubank now begins an organizational phase, which involves satisfying specific conditions stipulated by the OCC for final approval and receiving approvals from the Federal Reserve and FDIC.