Army's use of TikTok app raises concerns on Capitol Hill

The Army's use of a China-owned video app called TikTok as part of a new campaign to recruit young people into the service is raising concerns on Capitol Hill.

Democratic Sen. Chuck Schumer sent a letter to Army Secretary Ryan McCarthy asking about potential national security risks posed by the social media platform.

Schumer said national security experts have raised concerns about TikTok's collection and handling of user data, including personal information, locations and other content. And he noted that Chinese laws compel companies to cooperate with China's government and intelligence collection.

His comments came in the wake of broader U.S. interest in TikTok, which is used by millions of young adults and teenagers.