For the right reasons, congressional Republicans want to end taxpayer funding for Planned Parenthood, the country’s largest abortion provider.

Horrific undercover videos released by the Center for Medical Progress show Planned Parenthood officials blithely talking about selling fetal organs. One video shows a former technician for StemExpress, a company that worked with Planned Parenthood, explaining how she used scissors to cut apart “the most gestated fetus and closest thing to a baby I’ve seen” to “procure a brain.”

These Republicans’ motive is sound, but the problem is tactics. Some in the GOP say that unless Planned Parenthood is defunded, they’re willing to shut down the federal government—which would be a disaster for the pro-life cause.

Only 41% of Americans support cutting off taxpayer money to Planned Parenthood, and 51% oppose it, according to an Aug. 25 Quinnipiac University poll. Only 22% favor a government shutdown over Planned Parenthood funding; 69% oppose the idea. When pollsters asked who voters would blame more for such a shutdown, 41% said Republicans in Congress and 33% President Obama and Democrats.

To continue reading Karl Rove's column in the Wall Street Journal, click here.

Karl Rove joined Fox News Channel as a political contributor in February 2008. He also currently serves as a columnist for the Wall Street Journal. Mr. Rove helped organize the political-action committee American Crossroads. His latest book is "The Triumph of William McKinley: Why the Election of 1896 Still Matters" (Simon & Schuster, 2015). Follow him on Twitter @KarlRove.