When we were down last Aug there were 2 customs lines. The shorter line on the left was for people with items to declare and the longer line to the right was for people entering with nothing to declare. We had back packs and school supplies to donate so we took the short, items to declare, line. Explained to the agent that we had school items to donate and we were through faster than if we stood in the other line. It totally depends on the agent.
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Was Razorfish