Elizabeth Warren is making her first campaign tour around Iowa, a crucial state for the probable 2020 competitor, but was quickly forced to address an issue that's likely to hurt her in the race for the White House. During a Saturday morning event in Sioux City, audience members were given the chance to ask the Massachusetts senator questions. The first? A query about her decision to take a DNA test and release the results on her Native American ancestry. "Why did you undergo the DNA testing and give Donald Trump more fodder to be a bully?" an audience member asked the Democrat.