Some minority business enterprises (MBEs) benefit from their participation in government preferential procurement programs and some do not. A subset of minority vendors identified in this study behaves in ways suggesting sensitivity to penalties for violating minority business certification and procurement program regulations. These firms flourish in the absence of fraud penalties. A different group of minority vendors selling to government benefits from an environment in which MBE certification is comprehensive, bonding and working capital assistance are available, and assistance is delivered by a staff dedicated to aiding potential and actual MBE vendors. The preferential procurement program can serve as either a valuable economic development tool for fostering minority business development, or it can promote MBE front companies that pass on their procurement contracts to nonminority firms. Some governments choose to operate the former type of program; others opt for the latter.