What is a level playing field when it comes to trading/working with huge economies like the US?

It is easy for many many of us to give opinions when we know so little of what is really going on. It's like an iceberg, can't see it because  most of it is under water. 
When it comes to milk I sure like our 'pure filtered' milk (not available in the US to my knowledge) . The flavour of 2% is almost like whole milk 3.25%. It has an expiration date of over 4 weeks. It costs a bit more , but you get a lot more IMO. Do Canadians  make cheese etc with 'pure filtered' milk?

Just an aside. When I see more and more ads for 'summer outdoor furniture' I can't help but think things are not too bad. Today's outdoor furniture looks better than furniture in homes in the 1950's. I am 76.