I don't think lobbying the US Federal government is in OpenBSD developers' wheelhouse. Contractors working with the US government on the other hand have a long, distinguished history of successfully doing just that. In fact, that's largely the entire business model.
So it makes a lot of sense for each party to do what they are good at: OpenBSD developers write a clean, secure library, and contractors lobby to be allowed to use it.
I think OpenBSD has actually done contracted work for various U.S. government agencies. But on the other hand, I'm pretty sure that's the reason they've already ripped FIPS out and washed their hands of it... working on government projects is not fun and it's exactly the kind of thing they should outsource if they can.
So it makes a lot of sense for each party to do what they are good at: OpenBSD developers write a clean, secure library, and contractors lobby to be allowed to use it.