EUREKA SPRINGS -- If you're stopped for a moving traffic violation, does the officer have the right to search your vehicle without a warrant? Ask to look at your cell phone? Detain you for longer than 15 minutes?

Judge Kent Crow addressed those and other questions last week at a program on the Fourth Amendment to the Constitution, given to the local chapter of the Daughters of the American Revolution. What he finds fascinating about the amendment, which protects against unreasonable search and seizure:

"It's an absolute mess," he said. "It has created more litigation than any other amendment."

Crow, whose ancestors fought in the American Revolution, said the Fourth Amendment was a response to English writs of assistance, which gave the king's men the right to enter a home and search it any time they wanted.

"We are a nation of thieves," Crow said. "We were smugglers. We didn't want to pay the king's tax."

What the Fourth Amendment prevents: officers from crossing the threshold of your home without a search warrant specifying what (or who) they are looking for, and where it is likely to be found. If they have a warrant to search your computer, for example, they cannot go through your bedroom drawers or open the refrigerator, he said.

If, however, officers knock on your door and ask to come in and you admit them, then they are free to search the house, he said, something people may not be aware of. There is also a "knock and announce" law, meaning that with a search warrant, they can enter the house after waiting a reasonable time for someone to answer the door. They can also enter your home if there are exigent circumstances, meaning immediate concerns of an emergency nature, for example, for the safety of a person inside.

Once you are served with a search warrant, officers will proceed to the area specified and search while you peruse the warrant, Crow said. If the search is improperly conducted, you can challenge the evidence in court.

Fourth Amendment rulings have had a hard time keeping up with changing technology, Crow said, which have opened up more ways "the king's men" can cross your threshold. The general rule: If you are in a place where you have a reasonable expectation of privacy, for example, in a fenced backyard surrounded by shrubs, the Fourth Amendment protects you from government entry or surveillance.

"The right of privacy keeps expanding," he said.

Excerpt from:

Judge expounds on privacy rights