WASHINGTON All 25 female senators on Wednesday invited the U.S. womens national soccer team to meet with them to talk about challenges women face on and off the field, which presumably includes the players high-profile fight for equal pay.

In honor of your accomplishments, in recognition of your victory, and in acknowledgement of the work still before us, the bipartisan women of the Senate look forward to seeing you during your visit to the Capitol, reads a letter to the teams head coach, Jill Ellis, along with team captains Carli Lloyd, Megan Rapinoe and Alex Morgan.

The letter, spearheaded by Sen. Jeanne Shaheen (D-N.H.), is signed by all of the Democratic and Republican women of the Senate. They end the letter with the hashtag the team has been promoting: #OneNationOneTeam.

Heres a copy:

Shaheens office said the letter was delivered Thursday morning.

Fresh of their fourth World Cup victory, the U.S. womens national soccer team has already accepted invitations to the Capitol by Rep. Alexandria Ocasio-Cortez (D-N.Y.) and Senate Minority Leader Chuck Schumer (D-N.Y.). Female senators are hoping to meet with them at a time when 28 members of the team are suing the U.S. Soccer Federation claiming institutionalized gender discrimination, a violation of the Equal Pay Act and the Civil Rights Act.

Female soccer players base salary is roughly $30,000 less than their male counterparts at U.S. Soccer. And theres a massive gap between womens and mens World Cup bonuses. U.S. Soccer awarded the mens team a $5.4 million bonus after it lost in the round of 16 at the 2014 World Cup. It awarded the womens team $1.7 million when it won the entire 2015 tournament.

The pay disparities remain despite U.S. womens soccer games generating more total revenue than U.S. mens games for the last three years. Theyre getting more eyeballs too: The 2015 Womens World Cup final had more views than any soccer match in U.S. history , mens or womens.

U.S. viewers tuned into this years Womens World Cup in record numbers . Last week, Nike announced that the U.S. womens teams jersey is now the highest-selling soccer jersey ever sold on its website in one season.

U.S. Soccer has used several arguments to defend its pay structure, like the fact that FIFA, the international soccer governing body, offers more prize money for mens competitions, which is true and mostly outside U.S. Soccers control. But there are factors within U.S. Soccers control : The revenues are there. Its sitting on a budget surplus of $150 million . It could use at least some of that to pay female players more and grow the business. It is choosing not to.

Democratic lawmakers have been trying to channel the excitement of the U.S. womens national teams success and the anger over their unequal pay into pressuring U.S. Soccer to make changes.

More than 50 members of Congress wrote to U.S. Soccer last week demanding to know why, despite all their success , female players are still receiving inferior wages, working conditions and investment. Sen. Joe Manchin (D-W.Va.) introduced legislation on Tuesday that would cut off all federal funding for the mens 2026 World Cup, which the U.S. is co-hosting, until U.S. Soccer agrees to provide equal pay to the U.S. womens and mens teams.