CNN Poll: Trump's approval rating edges up to 42% as his latest Twitter meltdown raises new concerns; Deadline for 81 individuals and groups to answer House Judiciary request for info on possible obstruction, abuses; Documents from Michael Cohen search warrants to be made public; Beto O'Rourke raises record $6.1 million on campaign's first day, topping Sen. Bernie Sanders' first-day total; Sources: Biden readies endorsements ahead of likely April announcement he will join race for President; Sen. Elizabeth Warren takes questions during a CNN Presidential Town Hall; George Conway: Trump's mental condition "getting worse"; Kellyanne Conway: I don't share my husband's concerns via Knit