The fundamental reason why people from all over the world want to leave their homelands and move to the United States is because the Anglo-American legal system has made the U.S. a better place to live than whatever the legal system was in their homeland. It is also no accident that the most peaceful and prosperous countries in the Far East are the ones that have (to at least some extent) adopted the Anglo-American legal system.
I'm not a racist; but I am a culturalist. Some cultures just are better than others.
More here: https://www.youtube.com/watch?v=dud0ujJYh9k.
The English system of common law is one of the great achievements of Western civilization. The principles of the "Anglo-American legal system" can be adopted by anyone, just like the ideas in the Declaration of Independence. The English themselves--well, our colonial forebears came to America to get away from them.
Col. Isaac Barre was one of the Members of Parliament who opposed the Stamp Act in 1765. His remarks in Parliament in February 1765 (on why the colonists left England), in response to some patronizing comments by Charles Townshend, are a hoot to read. (Barre, MA, Barre, VT, and Wilkes-Barre, PA, are all named for him.)