I hadn't heard of Barnett before, but he seems to have a good understanding of the situation.
Here's a good article by Prof. Barnett.
The Rights Retained by The People
Address:http://www.randybarnett.com/rightsbypeople.html
And his latest book:
Restoring the Lost Constitution : The Presumption of Liberty
Address:http://www.amazon.com/exec/obidos/tg/detail/-/0691115850/002-9973716-2800850?v=glance