The modern effort to locate American liberties, it turns out, began in the mud at the bottom of Baltimore harbor. John Barron Jr. and John Craig sued the city for damages after Baltimore's rebuilt drainage system diverted water and sediment into the harbor, preventing large ships from tying up at Barron and Craig's wharf. By the time the case reached the U.S. Supreme Court in 1833, the issue had become whether the city's actions constituted a...