Crossing the border with oxygen
 

I am oxygen dependent and my husband and I plan on crossing the border from Seattle to Vancouver.Will we have any problems (either way) at the border? We will have a number of portable oxygen tanks in our car.

Thanks for any advice.

Pure oxygen should be no problem. Oxygen dihydride is another story. It is highly toxic when in the human blood stream in too high a concentration, and also the cause of 1000's of deaths in the US alone each year.

My mother crosses the border with her oxygen tank plus a few additional tanks (she likes to play the slots in Ft. Erie). She never has a problem.