Have you read Oregon Bigfoot Highway? The authors lists several instances of forest Service personnel who had contact at an elk feeding station. So yes, I would say that yes, the government in aware of them and has a "we leave each other alone" attitude about it. Heck, in my business I have had a few USFS guys who...with no knowledge of the others....tell me little tidbits. One told me they have forms they have to fill out...quietly....when a BF is reported. Another told me that when fires hit, USFS know that the caves are often a refuge for BFs. And two mentioned that if one wanted to have a good chance of seeing "them", you should try Cascade Lakes Hwy. So as I say, I've no doubt the feds know. They just don't want to open a can of worms.