New cases in the Fourth Edition include:
- Norton v. Southern Utah Wilderness Alliance, 2004. President Bush's Secretary of Interior made a decision to allow off-road vehicles in wilderness areas.
- Pennsylvania State Police v. Suders, 2004. This is the Supreme Court's most recent sexual harassment case.
- Correctional Services Corporation v. Malesko, 2001. Correctional Services Corporation is a private company that contracts with the federal government to run halfway houses. An employee's reckless disregard caused the plaintiff to have another heart attack.
- Whitman v. American Trucking Association, 2001. The case involves the EPA's enforcement of the Clean Air Act and is the Supreme Court's most recent delegation of power case.