Andrew Harnik, Associated Press
In this photo taken July 23, 2015, Republican presidential candidate, Sen. Rand Paul, R-Ky., speaks on Capitol Hill in Washington. Paul says Senate leaders have told him the chamber will vote on his effort to block federal aid to Planned Parenthood before lawmakers begin their August break.

WASHINGTON — The Senate will vote before its August recess on an effort to block federal aid to Planned Parenthood, presidential hopeful Sen. Rand Paul said Tuesday.

Paul, R-Ky., said that win or lose, simply having the vote will be "a huge victory for conservatives" opposed to abortion. Planned Parenthood has been under fire since some of its officials have appeared in videos, secretly recorded by an anti-abortion group, discussing procedures for obtaining fetal tissue for research.

Donald Stewart, spokesman for Senate Majority Leader Mitch McConnell, R-Ky., said McConnell "is working with a group of his members to address this horrific issue with the goal of taking a vote before Congress adjourns for the August recess."

Winning will be an uphill climb for anti-abortion senators because they will need 60 of the Senate's 100 votes to prevail. There are 54 Republicans and just a small handful of anti-abortion Democrats, though some abortion-rights Democrats have avoided defending the comments that Planned Parenthood officials made in the videos.

Asked by lawmakers Tuesday about Planned Parenthood, Health and Human Services Secretary Sylvia Burwell said the dispute over how the group gets fetal organs for research involves "passion and emotion and belief on many sides of the issue, and I want to respect that."

Burwell also told the House Education and the Workforce Committee, "There are statutes that guide the use of fetal tissue that are in place and should be enforced."

It is illegal to sell fetal tissue for profit, but legal for a group providing it to recover the costs of the procedure.

Planned Parenthood has said it has done nothing illegal or improper. It receives more than $500 million annually in government aid, including some state funds. Federal funds cannot be used for abortions except for pregnancies involving rape, incest or where the mother's life is in danger.

Paul, who has been toward the bottom in public opinion polls on GOP presidential candidates, credited his "persistence" in achieving a Senate vote.

House Republicans say there are no plans for a vote in that chamber before it begins its recess, probably on Wednesday. The Senate is scheduled to leave the Capitol at the end of next week.

The Center for Medical Progress, the anti-abortion group, released its third video Tuesday, this one showing Planned Parenthood officials and a former technician for a private company that procures fetal tissue discussing their procedures.