The article discusses how U.S. trade policies have shifted over time, moving from supporting global trade openness after World War Ⅱ to becoming more protective in recent years. These changes might favor U.S. export industries but could lead to protectionist actions. Currently, U.S. trade policies are more focused on protectionism. The article suggests that a significant shift in the thinking of U.S. policymakers is necessary to move back towards more open trade practices. In conclusion, the research points out that U.S. trade policies are becoming more protectionist and are likely to continue in this direction unless there is a notable change in policymakers' perspectives.