The recent insider trading controversy triggered by the Trump administration's abrupt tariff policy changes has once again brought the issue of stock trading regulation among U.S. Congress members into the public spotlight. In April 2025, Trump suddenly announced a suspension of increased 'reciprocal tariffs' on multiple countries, causing a surge in the U.S. stock market. 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, involving an amount of $315,000. This incident exposed the systemic loopholes that allow Congress members to profit from insider information.

Although the United States passed the 'Stop Trading on Congressional Knowledge Act' in 2012, requiring members to disclose large transactions, its enforcement has been weak. In 2024, the average stock return rate for Democratic members was still 31%, far exceeding the S&P 500 index's 24.9%. Former House Speaker Nancy Pelosi's husband, Paul Pelosi, made a profit of $1.25 million by accurately betting on the chip bill, and his 'stock god' record continues to provoke public dissatisfaction.