Brad Sigmon, 67, was executed in South Carolina by firing squad, a type of capital punishment that was last used in the U.S. 15 years ago. NewsNation's Alex Caprariello joins "The Hill" following Sigmon's death, saying the moment was a "controversial" one due to the method being used. #BradSigmon #SouthCarolina #execution "The Hill on NewsNation" combines the power of two trusted news sources to define today's most-pressing issues, and question Washington's power brokers on what matters most to the people they serve and what matters most to Americans. Weekdays at 6p/5C. NewsNation is your source for fact-based, unbiased news for all Americans. More from NewsNation: newsnationnow.com Get our app: trib.al/TBXgYpp Find us on cable: trib.al/YDOpGyG How to watch on TV or streaming: trib.al/Vu0Ikij