Republicans make a last-ditch attempt to overhaul healthcare, but face major challenges getting the 50 votes needed. Tensions with North Korea rise as both country's leaders make personal attacks against one another. A Texas lawmaker weighs in on trying to control North Korea. Candidates are well into preparations for the 2018 elections. Congressman Beto O'Rourke talks about taking on Sen. Ted Cruz as an underdog. Lone Star Politics airs Sunday at 8:40 a.m. on NBC 5.