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 Devi HarrisBiden tops Trump by 9 points in Fox News poll Biden could be picking the next president: VP choice more important than ever With VP pick, Biden can't play small ball in a long ball world MORE (D-Calif.), Sen. Elizabeth WarrenElizabeth WarrenBiden tops Trump by 9 points in Fox News poll Hillicon Valley: Apple rolls out coronavirus screening app, website | Pompeo urged to crack down on coronavirus misinformation from China | Senators push FTC on price gouging | Instacart workers threaten strike Democratic Senators urge FTC to prevent coronavirus price gouging MORE (D-Mass.) and Sen. Kirsten GillibrandKirsten GillibrandLawmakers already planning more coronavirus stimulus after T package Progressive advocates propose T 'green stimulus' plan Juan Williams: Biden's promises on women are a big deal 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: Court upholds Trump repeal of Obama fracking rule | Oil price drop threatens fracking boom | EPA eases rules on gasoline sales amid coronavirus Ocasio-Cortez blasts coronavirus stimulus package as 'shameful' on House floor Oil price drop threatens US fracking boom 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."