https://www.reuters.com/article/us-usa-election-facebook/facebook-ad-policy-challenged-by-false-claim-republican-graham-backs-green-new-deal-idUSKBN1X42IA >A left-leaning political group is challenging Facebook's policy not to fact-check some political ads by running a spot that falsely claims Republican Senator Lindsey Graham has endorsed the Green New Deal, a plan by prominent Democrats.