I share your distrust of the regulatory ability of the US government, particularly the FDA. I further lament the ability of the FDA to damage the regulatory procedures worldwide with their incompetence (or more accurately their lost purpose). In the case of Kevin's specific reference to regulation I suspect even the FDA could manage it. While research on the effects of large doses of EPA and DHA (Omega3) may be scant, understanding of mercury content itself is fairly trivial. I'm taking it that Kevin is referring specifically to quality assurance regarding mercury levels which is at least plausible (given litigation risks for violations).