Sen. Rounds (R-SD) Says “We Are Concerned” About Tariffs, But Understands Trump Is On A Mission

Trade tensions heat up between the U.S. and Canada.  Canada is South Dakota’s top destination for exports.  Senator Mike Rounds (R-SD) joins “The Hill on NewsNation” to discuss the potential impact of tariffs on the state, as well as federal office building closures in the state he represents.