It may seem that way, but, well, how shall I put this? Let's call it: The author of HB 1012 used a "variant definition" of the word "cooperate." Basically, it says that any federal agents who are not designated as LE by state law must get permission from the local sheriff or our AG to make arrests any any non-federal ground in Arkansas.
I'm a lawyer, but I'm not your lawyer. If you need some honest-to-goodness legal advice, go buy some.