Roadblocks and seizures

 1.Assume someone is talking on her cell phone with her parents while standing in the hallway of a university building between classes. She is telling them confidential things she does not want anybody else to hear. Does she have a reasonable expectation of privacy? Justify your answer. 2.What are the four requirements of a valid search warrant? Discuss each. 3.What categories of items are subject to search and seizure? 4.“Police officers executing a search warrant must always knock-and-announce before entry, otherwise the search is invalid.” Is this statement true or false? Justify your answer. 5.Compare and contrast the legal requirements for motor vehicle stops and searches. How are they similar? How are they different. 6.Why is a roadblock set up to catch drunk drivers constitutional whereas a roadblock to catch lawbreakers is not? 7.Give reasons why vehicle stops are based on reasonable suspicion instead of probable cause. 8.State four things an officer can do after a vehicle stop based on general law enforcement authority