The major differences between financial regulation in the united states and abroad relate to bank regulation. specifically, in the past, the u. s. was the only industrialized country to subject banks to restrictions on

The answer to this question is Branching
Banks branching allows banks to expand their services to an area outside their main home location.
While this may expand their target market share, it also improves the chances for companies to do money laundering, so restriction for this was made in the past.