Saying you wish to negotiate does not mean an agreement has or will be achieved.
There is no way that any new trade agreement with even one country can be agreed and passed into law by Congress inside what is left of the 90 days "halt" !
One thing is for sure is that there is NO point in any country retaliating with tariffs against US built merchant ships as there are virtually none.
Too few shipyards and skilled workforce in the US now.