International Salt Co. v. United States was a case in which a company, International Salt Co., sued the United States. The company wanted the courts to decide whether the United States had the right to take away some of its salt-producing machines.
International Salt Co. made salt using machines, and the United States wanted some of them for its own use. The company said that the United States didn't have the right to take its machines without getting permission or paying for them. They went to court to argue their case.
The court decided that the United States did have the right to take the machines if it needed them for a good reason. However, it also said that the United States also had to pay a fair price for the machines. This meant that the United States had to give International Salt Co. money for the machines it had taken.