I don't think we are any more of a police state then we've ever been. Law enforcement has always been able to search a home - or car, boat, RV, person - without warrant as long as there is probable cause and they can't wait for a warrant. And the determination of probable cause is left up to the discretion of the officers on scene. So technically they can - and always have been - able to do searches even without warrants and even by force. Now what happens at trial with any arrests or evidence is A different story.