PBS NewsHour - Season 42 Episode 241 -

Monday on the NewsHour, Republican leaders scramble to keep the momentum on their massive tax bill. We look at what's inside. Also: How the president's tweets affect the Russia investigation, Houthi rebels kill a former Yemeni president, what the Mafia has to do with protecting the Vatican against terrorism, rollbacks to two national monuments and Politics Monday on the Alabama Senate race.