Donald Trump is promising a universal 10% to 20% tariff on all imports to the U.S., plus perhaps 60% on China. Together this could push U.S. border taxes to highs not seen since the Great Depression and the infamous Smoot-Hawley tariff. Do Trump's first-term tariffs suggest he'd follow through with this? And does a president actually have the power to create a blanket tariff? Learn more about your ad choices. Visit megaphone.fm/adchoices