I was going to say USPS as well..
Once I tried going across the US boarder with 3 pieces of chopped wood in the back of my truck.. It was wood
The US officers hauled my ass into the office and started giving my a lecture and questioned me for an good 45 min about what I was going to do with 3 pieces of birch wood in my truck..
All that happened was I used it to hold the edges of a tarp down..
Just shoved it down between the tarp and the box walls as added weight, than strapped over top..When I was done doing my garbage dump task, took everything out but left the wood..
I never thought to take it out.. Birch grows on both sides of the boarder.. Learned a lesson.. US thinks they can get the Pine Beattle from Birch Trees.. It's Pine Trees Idiots..