Christopher Steele expressed concern last year at a Senate committee’s request for information about the former British spy’s anti-Trump dossier, according to text messages recently provided to Congress. “Would it be possible to speak later today please? We’re very concerned by the Grassley letter and it’s possible implications for us, our operations and our sources. We need some reassurances,” Steele wrote in a March 7, 2017 text message to Bruce Ohr, who then served as deputy assistant attorney general. Steele, a former MI6 officer, was seemingly referring to a March 6, 2017 letter that Senate Committee on the Judiciary Chairman...