Two Politicians Urge CDC to Strictly Enforce Conditional Sailing Order Politicians urge the CDC to strictly enforce its Framework for Conditional Sailing Order and to halt cruises if outbreaks occur. Apr 15, 2021 In a letter to the U.S. Centers for Disease Control and Prevention (CDC) director, Dr. Rochelle Walensky, two politicians have urged to strictly enforce the Conditional Sailing Order (CSO) if any new outbreaks occur on cruise ships. This comes after growing calls for the CSO to be lifted by July 4 from state officials, cruise lines, and ports. Cruise lines have even proved their case that cruises can resume safely. However, there is another side of this, with some calling for strict enforcement on cruises.