The Kentucky Republican said Tuesday that Senate GOP leaders told him the vote will occur. He says win or lose, having the vote will be a victory for anti-abortion conservatives.
Paul's effort seems a long-shot because he will need 60 Senate votes to prevail. House Republicans say there are no plans for a vote in that chamber.
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. Planned Parenthood has said it has done nothing illegal or improper.