世界银行：国内法律与政府采购中的保护主义

This paper examines how procurement rules affect international trade, leveraging a novel dataset that characterizes national laws across 141 countries. Text analysis of national laws on government procurement identifies prevalent protectionist measures such as preferential treatment for domestic bidders and mandatory domestic sourcing. A descriptive analysis reveals that 124 countries incorporate preferential treatment provisions, highlighting the widespread nature of protectionism. The preva