https://www.reuters.com/article/us-usa-russia-fracking/u-s-lawmakers-ask-facebook-twitter-for-information-on-anti-fracking-ads-idUSKCN1C229P

A U.S. House committee investigating whether Russia has tried to influence U.S. public opinion on fossil fuels asked Facebook , Twitter and Alphabet on Wednesday to turn over information about Russian entities that may have bought anti-fracking advertisements.