https://www.theguardian.com/technology/2017/oct/19/google-facebook-anti-refugee-campaign-secure-america-now

Secure America Now received targeted help to efficiently use its millions of dollars in ad-spending ahead of US general election in 2016, reports say

An anti-refugee campaign, Secure America Now, received targeted help from Facebook and Google to achieve the most efficient use of its millions of dollars of ad-spending in the run up to the US general election, it has been reported.