There are many places I've been where if they catch you bringing in firewood, they will confiscate the wood and fine you heavily. We live in central Virginia. 150 miles north of here the emerald ash borer is killing trees. Firewood from outside our area is not welcome here. Seeing a non-local camper with firewood hanging off the back is going to attract attention you won't like.
The original post made no mention of awareness of the problem or of the specific region or state in which the wood was from or going to. I think we all wanted to educate the op about a general problem.