The imprisonment of John Merryman at Fort McHenry at the start of the Civil War becomes the foundation for rules of habeus corpus in the United States.
"Ex Parte Merryman"
![Photo: Justice Roger B. Taney credit: Internet Archive book image/LOC/Flickr/Creative Commmons](https://npr.brightspotcdn.com/dims4/default/43c7987/2147483647/strip/true/crop/800x792+0+0/resize/880x871!/quality/90/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2F94%2F1a%2F3fb43733447fba478bdc328a9809%2Fym-taney.jpg)
The imprisonment of John Merryman at Fort McHenry at the start of the Civil War becomes the foundation for rules of habeus corpus in the United States.