What does this have to do with the price of pickles?

Yesterday Trump made a series of posts about the Canada/US trade war. The following one confuses me because can’t see what it has to do with how much I will be paying for pickles tomorrow.

"Wow! Canada has just announced that it is backing statehood for Palestine. That will make it very hard for us to make a Trade Deal with them. Oh' Canada!!!" .

Cheers and happy weekend!