The US Courts are claiming, apparently, that the Administration must work with Congress to set tariff standards.

Business, in particular the Stock Exchange, is looking for stability in the method of applying tariff per country.

Is that too much by way of claiming that the tariff, as it is being applied now by the Trump people, is too arbitrary and leaves the business world in a quandary as to how the tariff particular amounts are arrived at.  Currently, any tariff percentage seems stands open to the charge of being the product of one man, viz., the President!

Specifically, business wants to know who--what institution--has been charged with overseeing the deployment of tariffs?

My opinion: there are no wizards!