All the factors described in the article and several comments apply against a backdrop of North American stock markets that have gone up by as much as 20% since Trump's election and the implicit assumption that with the GOP in control of the House, Senate & Presidency, the strong stimulative public works and tax cut programs proposed by Tump during his campaign will no quickly proceed.

Clearly, there are growing reasons to question whether Trump and the GOP will proceed with these plans.

Markets are therefore understandiblt fragil.