There was a pretty good analysis on the sidebar this morning. Effectively, the main reason is that we now have a DHS where we had various other lines of authority. The purpose was a clarification.
Now, that does NOT mean that everything is hunky dory and we can go back to sleep. Effectively, pursuant to the bankruptcy of 1933, the President has been invested by our creditors with illegal and unchecked military powers within US borders (which is why I provided the link above; I urge you to read it all).
Geeze, I must be blind. I don’t see the legal analysis comparing the 1933 EO powers to Obama’s current EO in the side bar. Would you put a link so we can all read it. Thanks.