Democratic Sens. Dianne Feinstein of California and Patty Murray of Washington state introduced the bill, which would amend the US Code to require equal pay for men's and women's national athletic teams, on Wednesday.

The bill would add "wages and other compensation" to the existing code requirements for "equitable support and encouragement for participation by women where separate programs for male and female athletes are conducted on a national basis." It would also require US sports federations to submit reports to Congress every year showing compensation data by race and gender.

"Despite the incredible advancements made by women in sports, female athletes in sports like soccer and hockey are paid significantly less than their male counterparts," Feinstein said in a statement. "America cheered as the women's soccer team won an historic fourth World Cup, but our support shouldn't end with ticker-tape parades. All women should receive fair and equal pay, including our women athletes in every sport."

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