House Republicans are demanding the Department of Homeland Security explain how multiple terror suspects were allowed to cross the U.S.-Mexico border. All four suspected terrorists have been arrested, but they spent a significant amount of time in the U.S. before being taken into custody. #HouseGOP #border #terrorism Start your day with "Morning in America," NewsNation's live three-hour national morning newscast hosted by Markie Martin. Weekdays starting at 6a/5C. #MorningInAmerica NewsNation is your source for fact-based, unbiased news for all America. 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