It's true that by the end of last year, Republicans began to push the idea that the dossier was the catalyst for the investigation. But Isikoff is the first person I remember saying that the dossier was the spark. And Dems were very pro-dossier until Summer 2017. pic.twitter.com/J0W2KITNZx

— Chuck Ross (@ChuckRossDC) September 19, 2018