I would recommend checking out Dr. Harold Pease's site: www.libertyunderfire.org - Dr Pease is one of the foremost experts in the country on the Constitution, and has been an adviser to many prominent politicians and law makers over the years.
Ken, The Declaration of Independence set forth by our founding fathers(The Rule) and Constitution(the Law) were designed to work together. Any study should include both. There is a booklet published by the National Center for Constitutional Studies, (208)645-2625 ISBN 978-0-88080-144-7. Bulk discounts available at nccs.net