U.S. President Donald Trump, on board Air Force One on Sunday, said tariffs "are going to be the greatest thing we've ever done as a country," and are going to make the US "rich again." Trump's comments were made in response to a question about Americans who are concerned about the economic fallout of the tariffs and declining stock prices. Trump also said a government shutdown could happen, saying "Democrats want to destory the country." He downplayed tensions between his cabinet and billionaire Elon Musk.