This is a critical time for the industry as the Federal Trade Commission is expected to decide the fate of the Express Scripts-Medco merger in the coming weeks. ESI-Medco, and the pharmacy benefit manager threat in general, were at the top of the list of what members of the National Association of Chain Drug Stores came to talk about at the organization's annual NACDS RxImpact Day, as chains asked lawmkers to support new legislation that would bring greater transparency to PBM bookkeeping and to tell the FTC to block ESI-Medco.