Chants of "equal pay" reverberated from the bleachers of the Stade de Lyon in France on Sunday following the U.S. women's national team's 2-0 victory over Netherlands to win the FIFA Women's World Cup. 

Videos posted on social media showed different sections of fans repeatedly and loudly chanting "equal pay," a reference to the disparity between the income of the U.S. women's and men's national teams. 

The pay gap between men and women gained increased scrutiny as the U.S. women marched to their second consecutive World Cup title and record-breaking fourth championship overall. 

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The women's team is engaged in a gender discrimination lawsuit against the United States Soccer Federation because the organization pays male players far more than female players. 

For example, each player on the U.S. women's national team could receive about $260,000 in maximum earnings for winning the Women's World Cup, according to documents obtained by The Guardian, while each player on the U.S. men's national team could have earned nearly $1 million if the club had won the World Cup. 

Democratic lawmakers, including multiple 2020 presidential candidates, have spoken out about the issue in recent months. Sen. Kamala HarrisKamala HarrisUndecided voters in Arizona wary of Trump, crave stability Foreign policy is on the ballot in 2020; so is American credibility Perez on Biden's poll leads: Democrats 'take nothing for granted' MORE (D-Calif.), Sen. Elizabeth WarrenElizabeth WarrenPush to expand Supreme Court faces Democratic buzzsaw Georgia senator mocks Harris's name before Trump rally: 'Kamala-mala-mala, I don't know' Warren, Porter to headline progressive fundraiser supporting seven swing state candidates MORE (D-Mass.) and Sen. Kirsten GillibrandKirsten GillibrandHillicon Valley: Facebook, Twitter's handling of New York Post article raises election night concerns | FCC to move forward with considering order targeting tech's liability shield | YouTube expands polices to tackle QAnon Democrats question Amazon over reported interference of workers' rights to organize Dueling town halls represent high stakes for Trump MORE (D-N.Y.) in March signed on to a letter spearheaded by Sen. Dianne Feinstein (D-Calif.) urging the United States Soccer Federation president to "ensure that the U.S. Women's National Team is fairly compensated."

Rep. Alexandria Ocasio-CortezAlexandria Ocasio-CortezOVERNIGHT ENERGY: EPA may violate courts with new rule extending life of unlined coal ash ponds | Trump reverses course, approving assistance for California wildfires | Climate change, national security among topics for final Trump-Biden debate Biden distances himself from Green New Deal during town hall Ocasio-Cortez, progressives call on Senate not to confirm lobbyists or executives to future administration posts MORE (D-N.Y.) chimed in on the controversy on Sunday, tweeting, "At this point we shouldn’t even be asking for #EqualPay for the #USWMNT - we should demand they be paid at least twice as much."