I think time is more important than where. I'd try not to go through on a Friday afternoon or on the weekend when the weekend traffic is crossing the boarder.
The last time we went south I stumped the inspector when entering the US. She came into the MH to inspect the refrigerator and saw an empty plastic cherry container and asked if I had any more as I couldn't take Canadian cherries into the US. I'd already eaten all of them, so it didn't matter. But, I showed her the container saying they were cherries grown in Washington and imported into Canada in the first place. She had no idea if I could take Washington cherries back into Washington.
Bill