U.S. media outlets, including CNN, Voice of America and Radio Liberty, may be hit with restrictions in Russia as early as next week as part of an escalating media tit-for-tat between Moscow and Washington.

The Kremlin’s RT news network this week agreed to register as a foreign agent in the United States, following allegations it interfered in the 2016 presidential election. President Vladimir Putin warned the Kremlin would impose restrictions on U.S. media working in Russia in response.

CNN, Voice of America, Radio Liberty and its “Current Time” television channel are likely bear the brunt of the sanctions, Senator Alexei Pushkov, who chairs the Federation Council’s Information Policy Committee, told the state-run RIA Novosti news agency Friday.

The State Duma on Friday announced that lawmakers and experts were drafting amendments to Russia’s controversial foreign agent law to include media organizations.

