Vice President Kamala Harris gave her first major interview Thursday since becoming the Democratic nominee, laying out her plans for an opportunity economy" if she becomes president. Sociologist Nikhil Goyal, author of Live to See the Day: Coming of Age in American Poverty, says Harris's support for policies like an expanded child tax credit shows a clear contrast between herself and Republican nominee Donald Trump. He fights for the billionaire class," while Harris is on the side of working people," says Goyal.