The law apprears to have the intent of preventing fraudulent credentials being bootlegged (eg, letterhead, security badges, etc). An interesting question is whether or not any of the relevant symbols are (or are not) in the public domain. My understanding is tha some private sector trademarks are protected under the laws regarding intellectual propery rights (trademark), but government documents and publication are not typically subject to commercial monopoly (eg, copyright) law.
While works produced by Federal Employees in the course of their employment are in the public domain as far as copyright is concerned; trademarks are different than copyright. And while the Federal Government and States and State owned Universities don't normally register trademarks with the patent office; they generally have a similar-to-trademark-protection of their marks, seals, and insignias under a seperate federal of state code.
