You need to have a 2nd review process, and earlier than later. Loan officers have different experience and authorities which allow some to be more flexible (read as to take higher risks than another loan officer).
Imagine the problems (like Randy mentioned) if two identical applications came to the bank. The prohibited basis applicant was denied and the non prohibited basis applicant approved. The regulators and DOJ would have a field day!
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Integrity. With it, nothing else matters. Without it, nothing else matters.