The Department of Commerce (the Department) publishes this proposed rule to request public comments on proposed modifications to the regulations for the Steel Import Monitoring and Analysis (SIMA) System that would extend the system until March 2022. Extension of the authority for the SIMA System will ensure the Department's ability to track as early as possible certain steel mill imports into the United States and make the import data publicly available approximately five weeks in advance of the full public trade data release by the Bureau of the Census. Having access to full information about steel imports provides the public with greater knowledge to evaluate current market conditions.