The Secret Service has ramped up security around President-elect Donald Trump even further amid word that two Americans have been arrested in an alleged assassination plot backed by Iran. NewsNation national security contributor Tracy Walder tells “On Balance” that Iran has said it wants to settle the score with Trump, “and we need to be listening to that.” #donaldtrump #iran #assassinationattempts "On Balance with Leland Vittert" takes a critical look at some of the day's hottest subjects. Weekdays at 7p/6C. #OnBalance 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