The Mueller probe is over, meaning Democrats have a perfect excuse to move on to pressing policy debates - but will they squander the opportunity?; Brian Stelter on what the media got right & wrong with the Mueller investigation; Beto O'Rourke officially kicked off his campaign today-is his "feel-good" message enough to win?; The Biden 2020 campaign doesn't even exist yet but it's already facing challenges from Biden's past; The tidbit everyone forgot about in the Mueller report: Russia will try to interfere in the 2020 election; A class action lawsuit argues Poland Spring isn't spring water