Good luck with that.
The judge is going to laugh them out of court. Trade tariffs and trade deals are the purview of the Executive and Legislative branches of the US Government. The courts have nothing to do with it. In fact, I can't recall an incident where a case like this was even brought to court.
EDIT: I stand corrected. Apparently there was an incident with steel imports from Turkey in July of this year. So the President issued a 25% tariff on all steel imports except from Canada and Mexico. Then when tensions with Turkey escalated, the President issued another tariff against Turkey to raise it to 50%. That was deemed illegal by the court. It's extrordinarliy rare for a Presidential order of tariffs to be overturned by a court. Even the article mentions they are not aware of any previous case.
Landmark court decision limits presidential trade restrictions
So with this new information, I think they are going to try to use this case to overturn the President's trade policy with China. I wish them luck because they are going to need it.