The head of one of the largest U.S. teachers' unions said she "felt out of step" with DNC Chair Ken Martin's leadership.

NEWYou can now listen to Fox News articles!Two top union leaders have departed the Democratic National Committee (DNC), escalating an internal conflict about the future of the party that was stirred ...

Two union leaders and longtime Democratic National Committee members have resigned from the national party, marking the latest internal dispute of chairman Ken Martin’s tenure. The departures of ...