A Colorado newspaper is fighting claims that it peddles fake news stories. The publisher of Grand Junction’s Daily Sentinel is accusing a state lawmaker of defamation and threatening a lawsuit. If filed, legal experts said it would be the first of its kind, potentially setting a legal definition for what is considered fake news and what is not. The dispute began with an opinion column in the newspaper supporting a bill that would give journalists and others greater access to public records. Sen. Ray Scott, a Republican of Grand Junction who serves as assistant majority leader in the Senate, postponed the hearing and vote.