A police officer can search or seize conversation

no

Explanation:

unless he has a search warrant

Whenever law enforcement is engaging in a search and seizure, there are a number of rules, and exceptions, that apply to minimize the risk of an illegal search and seizure. These rules are derived directly from the U. S. Constitution, specifically the Fourth Amendment, as well as court opinions. Because of the broad range of rules that can apply to searches and seizures, a number of questions can often arise. Below are some of the most commonly asked questions regarding your rights when police search you, your home or your car.