As the Democratic caucuses and primaries heat up, the candidates are starting to go after each other with greater ferocity. Sensing a potential victory in Iowa, Mayor Pete Buttigieg launched an ad that goes after proposals from Sens. Elizabeth Warren and Bernie Sanders to make tuition free at public colleges and universities.


원문출처 : https://www.cnn.com/2019/11/29/opinions/aoc-warning-to-buttigieg-zelizer/index.html