Previous research on rice asserts certain heavy metals, like mercury, in the agricultural soils are incorporated into the rice plant. Mercury is considered to be the most toxic heavy metal. This study aims to investigate mercury levels in rice grown in the United States versus rice imported from Asia. In this study, 29 samples of rice were compared for mercury content (12 from Thailand, 6 from India, 6 from China, compared to 5 control samples from the USA). Samples ranged from 0.18 to 6.01 ng of element / g. Further research is needed to establish standards for mercury toxicity.