Louisiana State Senator A.G. Crowe's January 16, 2011 letter:
Government officials stated over and over that the use of the dispersants was designed to break up the oil into smaller digestible parts to be consumed by the sub-sea living micro-organisms. This strategy is unsubstantiated. In fact, the Corexit dispersant created the opposite results since Corexit contains toxic ingredients which act as biocides to prevent microbial digestion of the oil. Physical evidence supports that the entire response administered by government agencies have been inadequate.
Read the full letter here.