The document discusses the historical perspective and evolution of the cost submission and reconciliation processes for U.S. customs concerning maquiladoras. It outlines the issues with the legacy cost submission system, such as manual processes and lack of accountability, and details how the reconciliation program was developed to address these shortcomings by automating submissions and implementing stricter timelines. Additionally, it explains U.S. customs valuation under different methodologies, including the changes in how costs are calculated for maquilas, particularly through the computed value approach.