http://www.washingtonpost.com/blogs/the-switch/wp/2017/10/19/facebook-and-google-might-be-one-step-closer-to-new-regulations-on-ad-transparency/

Facebook, Google and Twitter are one step closer to facing new regulations that would place transparency requirements on a core aspect of their businesses: advertising.

With support from Sen. John McCain (R-Ariz.), Democratic Sens. Amy Klobuchar (Minn.) and Mark R. Warner (Va.) unveiled a bill Thursday that would mandate greater disclosure of political ads that run on large Internet platforms. The proposed legislation was crafted as a response to a Russian-financed propaganda campaign that ran on an array of Web platforms to spread disinformation and discord during the 2016 election.