“Does that mean that state LEOs are specifically prohibited from enforcing ANY federal laws??? That seems a bit odd.”
Well, that was Obama’s position on AZ immigration law.
True, but I think it would be optimal if state LEOs would be allowed to simply do their jobs in busting criminals without regard for where the original jurisdiction lies.
Heck, I’d like it if they’d arrest the illegals and simply hold them in a cell until the feds come and get them. Call up ICE and say “We’ve got some illegals for you and we’re going to charge you $45 a day for housing and feeding them. They’ll be here for as long as it takes until you guys come pick them up.”
If the illegals find out that they’ll be held indefinitely, they’ll probably not want to stick around that area very long. Then other states can do the same.
From the first paragraph, it appears that "these activities" are:
"[...] all services performed in the state, and all goods grown or made here for consumption within Arizona [, which] 'are not subject to the authority of Congress under its constitutional power to regulate commerce among the several states.'"