PDD Holdings (PDD  ) stock was trading down almost 3% pre-market on Feb. 26 as investors fear a potential import ban on its e-commerce subsidiary, Temu, might affect their investment in the stock.

While in 2023, Pinduoduo stock has seen a gain of 73%, it is already down 12.7% so far this year. Reports from Yahoo Finance show U.S. lawmakers contemplating a potential import ban on Temu.

The platform, known for its high-discount offerings, is under scrutiny for alleged connections to forced labor from the region of Xinjiang in China. This has prompted concerns among investors and market analysts.

Temu's Supply Chain Practices Under Scrutiny: U.S. lawmakers including Representative Blaine Luetkemeyer, have reportedly raised issues about Temu's supply chain practices, asserting that the Chinese company has not taken adequate measures to prevent its suppliers from employing forced labor. The concerns have led lawmakers to call for the addition of Temu to the list of violators under the Uyghur Forced Labor Prevention Act, as reported by sources familiar with the situation.

The Uyghur Forced Labor Prevention Act, enacted in 2021, aims to prevent the entry of goods into the United States originating from China's Xinjiang region. Allegations of forced labor involving Uyghurs and other minority groups have been directed at China, although the Chinese government has consistently denied these accusations.

Temu's Rise In Popularity: Temu has experienced a surge in popularity in the U.S. market. It attracts cost-conscious shoppers with its bargain deals. Despite its success and a considerable advertising push during the recent Super Bowl, the platform now faces potential repercussions from U.S. lawmakers.

Temu is the second most downloaded app on the App Store. It touts over 16 million downloads in the past month. The service also has approximately 51 million users in the U.S. as of January, according to SensorTower data.

Bank of America suggests that Temu could generate $50 billion in gross merchandise volume by 2025, per Seeking Alpha. However, the recent legislative challenges cast a shadow on these optimistic projections.

Pinduoduo and Temu have not immediately responded to requests for comments. The situation underscores the increasing legislative pressures on Chinese-based companies operating in the U.S. market.

Investors and industry observers are closely watching how these developments unfold. Indeed, they could have a substantial impact on the trajectory of PDD stock and Temu's future in the U.S.