[timm22]

Ribbons are property of the U.S. Armed Forces and Congress can stipulate conditions for using them!

By "property" I meant "real property." I though this was apparent from context since I was referring to clause 17, which covers "...authority over all places purchased...", but perhaps I should have been more precise in my language.

Military ribbons are things, not places. Moreover, the Federal government does not "own" ribbons purchased by private individuals from private sellers.

[Anitius Severinus Boethius]

Wow, you don't know the laws concerning trademarked items, do you? The government owns the ribbons. They own the design and they own the right to who can wear them. Just like, for instance, the LAPD owns their patches and can charge you with wearing their patches.

It is their property, as in “intellectual property”, and they take those ownership privileges very seriously.