This legislation mandates that the Secretary of Homeland Security and any entity contracting with the Department must grant Members of Congress immediate and unobstructed access to facilities used to detain or house aliens. This access is crucial for Members to fulfill their constitutional oversight responsibilities , ensuring transparency and accountability within these operations. The bill aims to prevent any attempts to limit or delay congressional access to these critical sites, reaffirming Congress's continuing interest in protecting this authority. Furthermore, the bill requires contractors operating such facilities to ensure compliance with these access requirements and to certify that all their personnel are trained on these provisions. Failure to comply, as determined by the Department's Inspector General, will result in the cancellation of the contract between the Department and the non-compliant entity. Importantly, Members of Congress are not required to provide prior notice before conducting oversight visits, and 'without delay' is explicitly defined as immediate admission to the facility without waiting.