It’s been a long time coming but the FDA finally announce gluten free regulations in the USA on Friday. Over the last few years they had proposed guidelines but no means to regulate those unscrupulous people who were throwing gluten free on everything.
Unlike Canada, oats are allowed under this regulation, as long as they can prove that they are below the 20 ppm of gluten cutoff. Any company that has Gluten Free Certification from GFCO still tests their products to a standard higher than the new gluten free regulations. GFCO requires all products to be less than 10 ppm (parts per million).
For an overview of the regulations, see: http://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm363474.htm