Arm yourself with some facts:
Equal Pay and the Wage Gap

American women who work full-time, year-round are paid only 77 cents for every dollar paid to their male counterparts.  We’re working to reduce this wage gap and to ensure that male and female employees get equal pay and benefits for comparable work.  An important tool to combat this inequity is the Paycheck Fairness Act, a commonsense bill that would give workers stronger tools to combat wage discrimination, bar retaliation against workers for discussing salary information, and ensure full compensation for victims of gender-based pay discrimination.  The Equal Employment Opportunity Restoration Act (EEORA) is another important bill that addresses employment discrimination by removing the barriers that the Supreme Court erected in Wal-Mart v. Dukes to employees’ rights to bring class-action suits under antidiscrimination laws. And raising the minimum wage would help close the wage gap, because two-thirds of minimum wage workers are women.

via Cognitive Dissonance