The Online Publishers Association (OPA) submitted comments to congressional hearings suggesting that the onrushing anti-spyware "Bono Bill" make explicit its exemption of cookies as one of the illegal mechanisms for tracking site visitors. While some supporters of H.R. 29 have said the bill wasn't intended to affect transparent cookies, a literal interpretation of the measures could easily include the tracking tags as fair game, along with trojan horses, keyloggers and spyware. The OPA noted that with such language, misguided states or federal regulators could easily codify rules that would require explicit permission be given each time a cookie is created.