washington u.s. lawmakers alarm foreign entities use internet influence last year election introduce legislation thursday extend rule govern political advertise television print radio also cover social media like facebook inc fb.o democratic senators amy klobuchar mark warner republican john mccain introduce honest ads act one strong efforts congress yet address allegations russian meddle 2016 presidential campaign legislation would expand exist election law cover television radio outlets apply pay internet digital advertisements platforms like facebook twitter inc twtr.n alphabet inc googl.o google laws fail keep evolve technology capabilities foreign adversaries klobuchar tell news conference measure would also require digital platforms least 50 million monthly view maintain public file electioneer communications purchase anyone spend 500 would require online platforms make reasonable efforts ensure foreign individuals entities buy political advertisements influence u.s. electorate companion legislation introduce house representatives republican representative mike coffman democrat derek kilmer social media company become increase focus congressional investigations allegations russia seek meddle 2016 u.s. election behalf republican candidate donald trump something now-president trump moscow deny warner technology executive enter politics say 150,000 ads pay rubles may tip iceberg term many political advertisements buy foreign firm say advertisements could purchase use dollars euros pound u.s. law bar foreigners spend money attempt influence american elections warner klobuchar acknowledge company resist legislation warner say hope social media company platform company work us immediately clear much support act would receive congress might come vote social media company begin lobby campaign least influence prevent bill company say open work congress turn information legally obligate protect users privacy facebook turn thousands ads congressional investigators chief operate officer sheryl sandberg meet members congress last week google say look step could take various platforms would work closely congress federal election commission industry come solutions support efforts improve transparency enhance disclosures reduce foreign abuse google spokeswoman riva sciuto say email statement klobuchar warner say possible measure could offer amendment another large piece legislation warner vice chairman senate intelligence committee one congressional panel investigate allege russian hack possibility trump campaign collude moscow klobuchar rank democrat senate rule committee help oversee elections mccain chairman senate arm service committee say would like become law early next year well ahead november 2018 u.s. mid-term elections every seat 435-member house one third 100-seat senate grab many lawmakers u.s. officials say fear russian efforts meddle poll well separately facebook twitter google say thursday would send general counsel testify nov. public hear senate house intelligence committees general counsel colin stretch facebook representative testify committees company spokesman andy stone say company high-profile chief executive officer mark zuckerberg coo sandberg appear twitter spokeswoman say act general counsel sean edgett represent microblogging site google spokeswoman say general counsel kent walker would represent company u.s. lawmakers want crackdown facebook twitter political ads