The U.S. Supreme Court’s two minority justices clashed Monday over how to handle illegal police searches, displaying a deep division between them over misconduct by law enforcement officials.

Liberal Justice Sonia Sotomayor, the court’s first and only Hispanic member, pushed back at a decision authored by conservative Justice Clarence Thomas, the court’s only African-American. The ruling will make it easier for police to avoid penalties for illegal searches of individuals if they can find an outstanding warrant to justify making an arrest.