You are correct, years ago the NSA (I believe) suggested that manufacturers of color laserjet printers implement security tracking measures to combat counterfeiting various documents. The EFF for a while kept track if which printers had implemented this technology, although the list hasn't been updated in a few years. It's primarily limited to consumer printers (bought at Office Depot, Best Buy) etc, and some slightly more advanced printers like light/medium duty office printers (Konica Minolta Bizhub series for example), but to my knowledge isn't used in commercial printing equipment applications.
Nonetheless - the printers we use are not in this category (laser jet), and are for a completely different facet of the printing industry (used for vehicle wraps, vinyl decals, stickers, etc) and would never be able to successfully replicate such documents just due to the nature and print capabilities of these machines which are roll fed (not sheet fed printers) and the overall printing process. These dots that are printed by consumer type printers can be seen (faintly) by the human eye on lighter backgrounds often.
No worries with my printers though, used for a completely different type of printing where this isn't a concern, and i've been up close with a Loupe examining print patterns and clarity, and color matching/correction for some color specific prints we do for museums, etc. and no such patterns exist in our prints. We are a full time print facility, specializing in large and grand format prints (vehicle wraps, signs, billboards, etc) so although we are in the printing industry, its at the opposite end of the spectrum in comparison.
A couple of quick links:
Your Printer Prints Secret Microdots That Can be Traced Back to You
List of Printers Which Do or Do Not Display Tracking Dots