Republican Texas Senator Ted Cruz returned from Cancun, Mexico with hundreds of thousands of Texans still without power and dealing with severe water issues. Cruz took a flight back to Houston after claiming he flew to the Mexican resort city for a night because his daughters “asked to take a trip with friends” but later said “it was obviously a mistake, and in hindsight I wouldn't have done it.” He also admitted his family had planned on staying through the weekend, not just the night, like he had originally claimed. Texas Democratic Congressman Joaquin Castro represents San Antonio and the surrounding neighborhoods where many were without power for days. He joins AC360 to react to Cruz’s trip and says he thinks he “threw in the towel on Texas.” Plus, researchers found that just one dose of the Pfizer/BioNTech’s Covid-19 vaccine provides more than 90% protection against the virus. The Pfizer vaccine is meant to be given as two doses, three or four weeks apart. Dr. Sanjay Gupta explains to Anderson Cooper why people should still get the recommended second dose.     Airdate: February 18, 2021   Guests: Rep. Joaquin Castro Dr. Sanjay Gupta   To learn more about how CNN protects listener privacy, visit cnn.com/privacy Learn more about your ad choices. Visit podcastchoices.com/adchoices