China is gaining influence over European and American media outlets through “manipulation of information and foreign institutions,” a bipartisan group of senators warned Monday.

“We are concerned that while some of these efforts may seem innocuous when taken independently, collectively they represent an attempt to increase the appeal of autocracy and strengthen Chinese leverage over U.S. allies,” Sen. Catherine Cortez-Masto, D-Nev., and 11 other senators wrote in a letter to President Trump’s national security team.