Rather , what was striking about the decision in Georgia v. Randolph , No . 04-1067 , was the pointed , personal and acerbic tone in which the justices expressed their disagreement over whether the Fourth Amendment 's ban on unreasonable searches was violated when the police in Americus , Ga. , arriving at a house to investigate a domestic dispute , accepted the wife 's invitation to look for evidence of her husband 's cocaine use .