President Trump said he supports a ban on diesel exports to bring down gas costs. Diesel prices now top $6.50 a gallon. Economists and Republicans are split on the idea, with some saying the ban would provide short-term relief but could drive up global gas prices which would impact the U.S. 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 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