What procurement fraud scheme involves bids or proposals that may contain specifications which are tailored to meet qualifications of a particular bidder?

The procurement fraud scheme you're referring to is known as "bid rigging" or "specification manipulation." In this scheme, the specifications for a project or contract are intentionally crafted to favor a specific bidder, often excluding other potential competitors. This can lead to inflated prices and subpar services, undermining the integrity of the procurement process. Such practices are illegal and can result in severe penalties for those involved.