Wyoming dealers can't sell to CO residents?

[Blockhead]

Don't know where you got that idea, but it's way not true.

How so? To my understanding, ATF is a federal LE organization that enforces federal law. My wxperience with ATF have concerned federal, not state, gun laws. I could see how they would cooperate with state authorities on matters cases where both state and federal law comes into question, but I can't think of an example of ATF getting involved in purely a state matter. If I'm totally wrong, I'm wiling to learn.