One of the ways you can do it is as a public procurement service. This is where you're actually thinking about the bodies, the federal agencies, that do public procurement. They can have as part of their contract, first of all, that the organization must have their own whistle-blowing arrangements, that staff working on the project can come directly to the contracting department with any issues, and that they will take action if they find out that the private sector organization undertakes any punitive damage against that individual for having raised the issue.
There are tricks of the trade that mean you don't need to have a full legal protection system in place and that allow you, within that system, to say that you will not deal with companies that actually shut down that information or don't have good arrangements.