Its not a second oath, its a reminder of the significance of your oath, and a focus on the constitution.
Secondly, they offer the opportunity for those who have not served to swear an oath to the constitution.
Its a constitutional awareness organization, not grandstanding, conspiracy, or paranoia as the media would have you believe.
That list is a list of unlawful, and plausible orders (some have been given in US history).
Japanese-American internment, gold confiscation, property eviction and firearms confiscation (Katrina).
It is not a second oath, not sure where you guys got that idea.
My unit was called to work in New Orelans after Katrina, and we did not confiscate any guns, nor did we do any forced evictions. We did however, have to weed through a lot of knot heads to help the people that decided to stay and watch after thier property(what was left of it). Spent 28 days down there, saw a lot of horrible things, every one of which was the result of the people of New Orleans actions upon each other. Walked down the street 4 blocks from the Super Dome and personally saw 23 city busses lined up to carry the people out, every had the motors, windows, and tires shot all to hell. A lot of the problems that the people of New Orleans were brought on by their own.