(CNN) Republican Sen. Susan Collins -- who cast one of the decisive votes in favor of Brett Kavanaugh's confirmation -- told reporters on Monday that she feels "vindication" after Kavanaugh voted in a case related to Planned Parenthood.

"I certainly do" feel vindicated Collins, who supports abortion rights, told reporters gathered on Capitol Hill.

The Maine senator was referring to the fact that earlier in the day -- over the dissent of conservatives Justices Clarence Thomas, Samuel Alito and Neil Gorsuch -- the court decided not to take up two cases brought by Kansas and Louisiana concerning defunding Planned Parenthood.

At issue was whether the states could terminate Medicaid contracts with Planned Parenthood affiliates who offer preventive care -- like cancer screening and birth control -- to low-income women.

Lower courts ruled against Kansas and Louisiana, handing a victory to Planned Parenthood.

Read More