Financial institutions have rushed to implement midcourse corrections and fielded numerous questions from skeptical clients and staff alike in the two months since the U.S. Treasury Department’s customer due-diligence rule took effect, say sources. The CDD rule, which has encountered resistance from anti-money laundering professionals in the six years following its initial proposal, requires financial institutions to identify any individual who owns at least 25 percent of a legal entity that opens an account on or after May 11, as well as one individual who exercises significant control over the legal entity. A month before the rule took effect, the...