President Donald Trump threatened to immediately double tariffs on Mexico unless it stops an estimated 1,500 migrants, most from Central America, who left Tapachula near Guatemala on Tuesday. The migrants reportedly hope last week's Democratic midterm win could improve their chances of settling and finding jobs in the United States. Trump said Mexico, the governor of Texas, Border Patrol and Immigration and Customs Enforcement had been informed, but did not set a response deadline. The peso fell to its lowest level of the trading session, while Bloomberg reported uncertainty over whether Trump could lawfully double the levies after a Supreme Court ruling earlier this year limited his tariff powers.