BLITZER: We have breaking news on the next big move by the president's ousted attorney general, Jeff Sessions. Our political reporter Rebecca Buck is here in THE SITUATION ROOM. Rebecca, we're learning Sessions, what -- is about to announce a run for the U.S. Senate again?</s>REBECCA BUCK, CNN POLITICAL REPORTER: That's right, Wolf. Sources telling CNN that sessions will announce tomorrow that he is jumping into what is already a crowded Republican race for Senate in Alabama, the Republican primary, but of course, Sessions who served as a senator in Alabama is expected to become almost an instant front- runner in this race. One complicating factor, though, his strained relationship with President Trump. This is setting up potentially a major clash between the president and his former attorney general. Of course, President Trump has made no secret of his negative feelings for Jeff Sessions. We have something of a retrospective to show you here of his comments about Sessions. He said he's very weak. He's disgraceful, recently today he said he never took control of the Justice Department. So, he has not been shy to criticize Sessions in the past. The question is how soon will he begin to criticize him in this race and how intense will his attacks on Sessions be? We are expecting him, of course, to weigh in. Another interesting dynamic, though, is that Sessions will not be backed up by the GOP establishment with this decision. Mitch McConnell did not urge him to run in this race. The Republican Party felt very strong about the field that they had in Alabama, so Sessions going it alone, relying on his longstanding relationships with Alabama voters to carry him in this race is a big risk and it to be very dramatic.</s>BLITZER: Well, he does get -- he's got to get through a tough primary in order to be the Republican nominee and face the incumbent Democrat. We'll see what's happening over there. Thanks very much, Rebecca, for that update. Just ahead, we are getting new details of the horrific massacre on the nine women and children in Mexico. Are authorities any closer to figuring out who attacked them and why?
Jeff Sessions To Announce Run For Senate In Alabama