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 HarrisJayapal hits back at Biden on marijuana 'prohibition' Poll: Biden holds 20-point lead in South Carolina Fox News anchor apologizes for saying Booker dropped out of 2020 race MORE (D-Calif.), Sen. Elizabeth WarrenElizabeth Ann WarrenRahm Emanuel: Bloomberg, Patrick entering race will allow Democrats to have 'ideas primary' Feehery: Pivoting to infrastructure could help heal post-impeachment wounds Jayapal hits back at Biden on marijuana 'prohibition' MORE (D-Mass.) and Sen. Kirsten GillibrandKirsten GillibrandMaloney primary challenger calls on her to return, donate previous campaign donations from Trump Senate confirms controversial circuit court nominee She Should Run launches initiative to expand number of women in political process 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-CortezNew York man pleads guilty to threatening to kill Omar Funding stopgap would give Congress more time to debate expiring surveillance provisions 'Saturday Night Live' presents Trump impeachment hearings with 'pizzazz' of soap opera 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."