Trump vows retaliation against GM for layoffs

Mother-daughter team installs battery packs in Chevrolet Volt electric carsAfter General Motors announced on Monday that it will kill the Chevy Volt as part of an effort to streamline its lineup, close five factories, and lay off 15 percent of its workers, President Trump took to Twitter to vow retaliation for the damage the layoffs could do to the U.S. economy. "The U.S. saved General Motors, and this is the THANKS we...