If I'm not mistaken believe this is about to become law of the land.
From Wikipedia
Castle Doctrine refers to a legal concept derived from English Common Law as it is presently applied in sections of the United States of America. It designates one's home (or any place legally occupied, such as one's car or place of work) as a place in which one enjoys protections from both prying and violent attack. In the United States, laws informally referred to as 'castle laws' can sometimes impose an obligation to retreat before using force to defend oneself. The Castle Doctrine provides for an exception to this duty. Provided one is attacked in their own home, vehicle, or place of business, in jurisdictions where 'castle laws' are in force, one may stand their ground against an assailant without fear of prosecution.
The opposite of a "castle" principle is the "Duty to Retreat", which is the case in most U.S. Northeastern states, such as Connecticut, New York, Pennsylvania and Massachusetts[1] (where Castle Doctrine takes effect only within the confines of the 'dwelling'). Castle Doctrine laws in the U.S. are sometimes referred to as the "use of deadly force" [2] or "no retreat" laws, and originate in the home, but are sometimes (depending on the state) extended to the automobile or the business or any place where one has a legal right to be (a campground or park, for example).
From Wikipedia
Castle Doctrine refers to a legal concept derived from English Common Law as it is presently applied in sections of the United States of America. It designates one's home (or any place legally occupied, such as one's car or place of work) as a place in which one enjoys protections from both prying and violent attack. In the United States, laws informally referred to as 'castle laws' can sometimes impose an obligation to retreat before using force to defend oneself. The Castle Doctrine provides for an exception to this duty. Provided one is attacked in their own home, vehicle, or place of business, in jurisdictions where 'castle laws' are in force, one may stand their ground against an assailant without fear of prosecution.
The opposite of a "castle" principle is the "Duty to Retreat", which is the case in most U.S. Northeastern states, such as Connecticut, New York, Pennsylvania and Massachusetts[1] (where Castle Doctrine takes effect only within the confines of the 'dwelling'). Castle Doctrine laws in the U.S. are sometimes referred to as the "use of deadly force" [2] or "no retreat" laws, and originate in the home, but are sometimes (depending on the state) extended to the automobile or the business or any place where one has a legal right to be (a campground or park, for example).

