The House Select Committee on China has expressed concerns over Amazon ’s ecommerce partnership with Chinese-owned video platform, TikTok. The partnership between the platforms allows TikTok users to link their Amazon account, and make purchases through the site without leaving the TikTok app.

An Amazon spokesperson said via email, “Like many other US companies, we maintain open lines of communication with officials across all levels of government to discuss issues that are of interest to policymakers, our employees, and our customers.” TikTok didn’t respond to a request for comment.