The 2a described

http://www.largo.org/literary.html

[This is a well-analyzed informational dissection of the Meaning of the Second Amendment, broken down in a way to interpret its meaning and intent of purpose.]

By J. Neil Schulman
If you wanted to know all about the Big Bang, you'd ring up Carl Sagan, right? And if you wanted to know about desert warfare, the man to call would be Norman Schwarzkopf, no question about it. But who would you call if you wanted the top expert on American usage, to tell you the meaning of the Second Amendment to the United States Constitution?
That was the question I asked A.C. Brocki, editorial coordinator of the Los Angeles Unified School District and formerly senior editor at Houghton Mifflin Publishers -- who himself had been recommended to me as the foremost expert on English usage in the Los Angeles school system. Mr. Brocki told me to get in touch with Roy Copperud, a retired professor of journalism at the University of Southern California and the author of "American Usage and Style: The Consensus.
A little research lent support to Brocki's opinion of Professor Copperud's expertise.
Roy Copperud was a newspaper writer on major dailies for over three decades before embarking on a distinguished 17-year career teaching journalism at USC. Since 1952, Copperud has been writing a column dealing with the professional aspects of journalism for "Editor and Publisher", a weekly magazine focusing on the journalism field.
He's on the usage panel of the American Heritage Dictionary, and Merriam Webster's Usage Dictionary frequently cites him as an expert. Copperud's fifth book on usage, "American Usage and Style: The Consensus," has been in continuous print from Van Nostrand Reinhold since 1981, and is the winner of the Association of American Publisher's Humanities Award.
That sounds like an expert to me.

You can read the text at the link provided.

http://www.largo.org/literary.html