The annual Equal Pay Day is held to highlight the ongoing gender pay gap.
In the 1980s, the Democrats began taking campaign funding from big corporations, Wall Street and the very wealthy.
Some argue the gap is due to "women's choices," but that hides key cultural and social factors.
Whether it's child marriage or maternity leave, progress over the past 20 years has been mixed.
The comedian's Equal Payback Project is raising the estimated $29 trillion owed to all working women