The U.S. Supreme Court refused to consider a move to resurrect an Arizona law that would have disqualified abortion providers from receiving public funding for other medical services.
The high court declined to hear Arizona Attorney General Tom Horne's appeal of a lower court ruling that blocked the 2012 law.
That ruling was upheld last August by a three-judge panel of the 9th U.S. Circuit Court of Appeals, which agreed with U.S. District Judge Neil Wake that the law violated federal Medicaid law by not allowing patients to freely choose a qualified medical provider.
The Supreme Court in May refused to revive a similar law in Indiana that also has been blocked.
Horne and the Christian legal group Alliance Defending Freedom had argued the state's case before the U.S. Supreme Court.
"Arizona should be free to enforce its public interest against the taxpayer funding of abortion and in favor of the best health care for women, which is what this law sought to do," Alliance senior counsel Steven Aden said in a statement. "We are disappointed that the Supreme Court did not decide to weigh in on that principle."
Planned Parenthood has served Medicaid patients through the state's Arizona Health Care Cost Containment System since 1991.