U.S. Passport or Passport Card May Be Needed to Travel Within the U.S. in 2018

Residents of New York, California, Illinois and Missouri, along with several other states, may need to obtain a U.S. Passport or Passport Card to fly domestically in 2018.  

https://finance.yahoo.com/news/might-need-passport-card-travel-domestically-2018-141115032.html
​