remember you can't take a power cord across the border.
The portable fab and welding rig, complete with small brake, Brigeport mill, and lathe should do it. It works great at race tracks so I am thinking good enough for making a box. If not, they can ship it to my shop. I have a couple dozen different CNC machines that we use daily to make parts from race cars to electrical panels.
I think testing is at Intertek in the USA. I could get it fabbed up and welded in their parking lot. Border problem solved.