White House economic adviser Larry Kudlow asserted President Trump’s threat to block trade between private Americans businesses and China, saying he has “emergency economic power authority” to do so. “Do you believe that the president does have the authority to block private businesses from investing in China?” CBS News' Margaret Brennan asked Kudlow on “Face the Nation” Sunday. “Ultimately, he does have authority,” responded Kudlow. “It’s an emergency economic power authority,” he said, adding that Trump “is not intending to” block trade with China at this time. Amid an escalating trade war, Trump in a series of angry tweets Friday...