"The Administration strongly supports Senate passage of S. 3220, the Paycheck Fairness Act. Women continue to earn substantially less than men for performing the same work," the Office of Management and Budget statement sent out Monday afternoon said.

"The Paycheck Fairness Act is commonsense legislation that strengthens the Equal Pay Act and would give women the tools they need to fight pay discrimination," the statement continued. "This bill would address the pay gap by enhancing enforcement of equal pay laws. Specifically, it would prohibit retaliation against employees who ask about or discuss wage information, and would provide more effective remedies for women subjected to discriminatory pay practices."

The White House's stated support comes as Democrats launch a public relations blitz in support of the legislation, a day ahead of a procedural vote on the legislation.

Republicans have expressed strong opposition to the bill, making it unlikely that Democrats will collect enough votes to overcome a filibuster and pass the legislation. Republicans argue the Equal Pay Act sufficiently provides protection for women and ensures equal pay regardless of gender. Democrats, on the other hand, maintain that the Paycheck Fairness Act's provisions are vital to closing the gender wage gap. The legislation creates a federal grant program to improve women's salary negotiating skills, and aims to improve protections for women who file gender-discrimination lawsuits.