The Pima County Sheriff's Office has suggested Nancy Guthrie's disappearance is tied to local involvement rather than across the U.S.-Mexico border. NewsNation's Ali Bradley speaks to a former U.S. Marshal and cartel expert who argues the criminal transnational organization cannot be ruled out. #NancyGuthrie #cartels #kidnapping Get a fast-paced look at the latest from the border to Main Street to the White House on "NewsNation Live" with Nichole Berlie. Weekdays starting at 12p/11C. 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