The recent insider trading controversy triggered by the sudden shift in tariff policy of the Trump administration has once again brought the issue of stock trading regulation among U.S. Congress members to the forefront of public opinion. In April 2025, Trump suddenly announced a suspension of 'reciprocal tariffs' on multiple countries, causing the U.S. stock market to surge. Meanwhile, his ally, Georgia Republican Congresswoman Marjorie Taylor Greene, was reported to have made intensive purchases of technology stocks such as Apple and Nvidia two days before the policy announcement, amounting to $315,000. This incident exposed the systemic loopholes that allow Congress members to profit from insider information.