https://www.theguardian.com/technology/2020/oct/18/facebook-says-it-rejected-22m-ads-seeking-to-obstruct-voting-in-us-election

Nick Clegg, Facebook vice president, says social media giant also attached false information warnings to 150m posts

A total of 2.2m ads on Facebook and Instagram have been rejected and 120,000 posts withdrawn for attempting to “obstruct voting” in the upcoming US presidential election, Facebook’s vice president Nick Clegg has said.