Trudeau and Freeland have said Chapter 19 is a line in the sand again.

Trump and Ross have not told us what they want yet in this regard.

I suspect they will see how the 220% plays out in the US in an already cluttered week with healthcare 3.o failing, North Korea stability in free fall and the President wading ignorantly into professional sports.

Look for the use of US courts in any dispute involving a U.S. plaintiff to be the starting point.  This is a very standard position in international deals and will be familiar to and suit both Trump and Ross.

How will Trudeau and Freeland deal with their ultimatum?  Can they really walk away?  Makes their ludicrously planned small business tax look like genius.

If I were a betting man, in terms of low probability and high severity I still think that the U.S. may go after the ownership rules relating to banks and telcos.  Look out, Trump has lost on every domestic front and needs to find someone you can bully.