The court released its 5-2 opinion on Thursday. Police went to a Miami-Dade home in 2006 with a drug-sniffing dog on a tip, later arresting the resident and seizing marijuana.
The court's majority said police should have gotten a warrant first because a drug dog's sniffing outside at a private residence constitutes a search.
But dissenters said there's no expectation of privacy regarding illegal substances in one's home. Attorney General Pam Bondi says the ruling hinders law enforcement and plans to appeal it to the U.S. Supreme Court.