Trump in Chicago interview defends call for tariffs on imports, does not commit to peaceful concession if he loses Chicago TribuneTrump Brags About His Math Skills and Economic Plans. Experts Say Both Are Shaky. The New York TimesTrump Crumbles When Pressed on Economic Policy in Tense Interview Rolling StoneDonald Trump addresses Economic Club of Chicago WGN TV ChicagoTrump vows to impose tariffs as experts warn of price hikes and angry allies The Guardian US