Thanks. What if I bring my innovation up during an ongoing investigation (against an agency fraud), where I am myself a pro-se complainant? Can I demand qui tam fees for myself, under the False Claims Act, and have that innovation covered?

That innovation will have to be used if the acting agencies were to tackle the problem.

No, you cannot.

It's not a question of whether the agency has to use it, it's a question of whether it is your property. If you don't have some form of protection, such as a patent or a contract with the agency, they are free to use it without compensation to you.