The Trump campaign has already asked a judge in Pennsylvania.
（After Democratic presidential nominee Hillary Clinton lost the 2016 election to Trump.Reporting by Andy Sullivan and Steve Holland.
還Zuckerberg spoke on the issue at a weekly forum with Facebook employees where he is sometimes asked to defend content and policy decisions.
國a company spokeswoman said in a statement on Wednesday.
個Trumps campaign sent letters to broadcasters in Florida.
and few were driven by entrenched anti-vaxxer views.