According to the information Laur'el gave me, when the stamps were tested, they leached chemicals that are used in the manufacture of the stamps, and therefore were determined to be non-compliant. She did not specifically tell me if they were the chemicals used in the "ingredients" of the stamp, or if they were the chemicals used in the etch process. She was also told that there are severe penalties if she continues to knowingly use them.
I know, from buying stamp-making kits, that the chemicals used in the etch process are carcinogens, and are absorbed into the rubber.
Hey, I'm disappointed about it. I would love to work with the stamps I find in the craft stores. I have all three of the big ones on the East Coast here - Michael's, AC Moore, and Joann, plus what they sell at Wal-Mart and the paper stores. I'm not willing to risk it.