Dissenting Justices Clarence Thomas and Samuel Alito said the court ultimately will need to intervene on a controversial free speech issue at universities across the country.

The Supreme Court on Monday declined to hear a challenge to Indiana University’s use of a “bias response team,” prompting a dissent from Justice Clarence Thomas, who argued the case was an important opportunity to resolve a split among federal courts over whether such programs infringe on student free speech rights.

“Hill was wrong the day it was decided, and the case for overruling it has only strengthened ever since,” Paul Clement, a veteran conservative Supreme Court attorney who previously served as solicitor general, wrote in the petition challenging Carbondale’s ordinance.