The AG doesn't make the laws (supposedly), he just enforces them. There are laws in existence against both weed and unauthorized immigration. The question isn't why he's going after CO. The question is why he isn't going after CA, OR, and other states that don't comply with federal laws.
We have proper procedures for changing laws that we don't like and just ignoring them isn't one of them. If those states don't like the existing laws, they need to go through the proper channels to attempt to change them. If they don't, some governors need to face prosecution.


β€œIn a time of deceit telling the truth is a revolutionary act.”
― George Orwell

It's not over when you lose. It's over when you quit.