Addressed the issue of whether the due process clause of the 5th Amendment applied to actions of the states; John Baron ran a successful docking business in Baltimore, and the city entered a period of building and road construction, so dirt was deposited into his wharf; it was substantial enough to make the wharf unusable; baron sued the city and state for damages and argued that the city took his lands "without just compensation" from the 5th Amendment
After WWI and during the Great Depression the US tried to be an Isolationist nation. They put out tariffs so people would buy US (forgetting that the rest of the world was still devastated by WWI (economies included)).