The Supreme Court on Thursday turned away pleas from anti-abortion activists to make it easier for them to protest outside clinics, declining to wade back into the abortion debate just days after striking down a Louisiana law regulating abortion clinics.

The justices said in a written order that they would not hear cases from Chicago and Harrisburg, Pennsylvania, where anti-abortion activists had challenged ordinances that restrict their behavior outside clinics.

As is usual, the justices did not comment in turning away the cases. The order from the court noted Justice Clarence Thomas would have heard the Chicago case.

The Supreme Court has since the late 1990s heard several cases involving demonstration-free zones, called buffer zones, outside abortion clinics. Most recently, in 2014, the justices unanimously struck down a law that created a 35-foot protest-free zone outside Massachusetts abortion clinics. The court said Massachusetts’ law, which made it a crime to stand in the protest-free zone for most people not entering or exiting the clinic or passing by, was an unconstitutional restraint on the free-speech rights of protesters.

On Thursday, one of the two cases the court declined to take up involved an ordinance passed by the city counsel in Harrisburg, Pennsylvania's capital, in 2012 that made it illegal to “congregate, patrol, picket or demonstrate” in a zone 20 feet from a health care facility. Anti-abortion activists sued, arguing that the ordinance violates their free speech rights. Lower courts have upheld the ordinance, however, ruling it doesn't apply to “sidewalk counseling,” where individuals who oppose abortion offer assistance and information about alternatives to abortion to those entering a clinic.