Amid fears that U.S. Congress can slash more than a half-billion dollars in federal funding for Planned Parenthood, the women’s health nonprofit organization is leaning on donors and preparing to lobby friendly legislators to stem some of the potential loss.

The potential decision to defund Planned Parenthood has become more likely as Congress as well as the White House is going to be under the control of the Republicans for the first time since 2006. President-elect Donald Trump has already indicated his support for defunding the organization.

On Thursday, agents from the Texas Office of the Inspector General reached at the Planned Parenthood clinics in Houston, Dallas, and San Antonio unannounced. They were there to have documents related to allegations of Medicaid fraud.