The recent insider trading controversy triggered by the sudden change in tariff policy of the Trump administration has once again brought the issue of stock trading regulation for U.S. Congress members into the public spotlight. In April 2025, Trump suddenly announced a suspension of increased 'reciprocal tariffs' on multiple countries, causing U.S. stocks to soar. Meanwhile, his ally, Georgia Republican Congresswoman Marjorie Taylor Greene, was revealed to have made intensive purchases of technology stocks such as Apple and Nvidia two days before the policy was announced, involving an amount of $315,000. This incident exposed the systemic loophole that allows Congress members to profit from insider information.