Maying Running News Today

In our 2020 lead today a surprise. michael bloomberg maying running for president. the former new york city mayor and eighth richest person in america planning to file paperwork by end of business today for the alabama primary in case he decides to run. cnns cristina alesci joins me now. all signs are pointing in that direction. >> reporter: right. an about-face from two moss when he told us he felt completely comfortable sitting this one out. the big question today is, what changed? bloomberg a...