Google admits it has a “Project Dragonfly.” Whether its end goal is to get the company’s signature product back into China is less certain.

At a Senate Commerce Committee hearing on data privacy Wednesday, Republican lawmakers pressed Keith Enright, Google’s chief privacy officer, on reports that the code-named initiative was part of an effort to launch a censored search engine in the communist nation. The platform reportedly tracks users’ locations, phone numbers, and other personal information that could be shared with the Chinese government.