The recent insider trading controversy triggered by the abrupt change in tariff policy under the Trump administration 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' against several countries, causing U.S. stocks to surge. Meanwhile, his ally, Georgia Republican Congresswoman Marjorie Taylor Greene, was reported to have heavily bought shares in tech companies like 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 U.S. passed the 'Stop Trading on Congressional Knowledge Act' in 2012, requiring members to disclose large trades, the enforcement of this law has been weak. In 2024, the average stock return 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, profited $1.25 million from accurately betting on the chip bill, and his 'stock god' record continues to provoke public dissatisfaction.