Watch: Hillary Clinton’s celebrity supporters sing ‘Fight Song’

It started as a ploy to scare Texas out of redrawing its congressional map and ended with California voters approving a new map of their own, one that could hat could help alter the balance of power in Washington.

William Mulholland was the water boss who made L.A. possible. His reputation gave him unchecked authority as a dam builder. In 1928, that led to one of America’s deadliest disasters--and the question of whether it was a crime.