Beto O’Rourke Announces 2020 Presidential Bid; Facebook, Instagram, and WhatsApp Outages; Political News Briefs: Senate Votes to Block Trump Emergency Declaration; House Votes to Release Mueller Report; Deaf Woman Sheena McFeely Wins SXSW Award for ASLNook; Congresswoman Beatty Introduces Resolution To Recognize March 13 to April 15 as “National Deaf History Month”; Guest #DeafBing: Accidental Poke​