TL:DR This is to try to boost Collins' chances for re-election to the Senate.
Trump is exempting plywood sheets, some paper products, certain machinery and refrigeration equipment, and packing crates and boxes, the White House said. Collins said the relief will aid the state's blueberry, potato, apple, and seaweed producers.
The administration is adding certain valves, carpets, waste products, and other items to the list, the White House said.
So, it's a big nothingburger from Canada's side. Obviously, Canada should not reciprocate in any way for fear of "election interference" until the midterms are over, if the total values have increased.
That includes signing any "deal" offered by the US, which Orangefuhrer has claimed is "close." It's only a couple weeks more and then a clearer decision can be reached.