False.
The trade deficit with Mexico look alarming until you realize that there are 300mm Americans, and only 100mm Mexicans.
It is actually more alarming still when you consider that we used to have an outright surplus. Your "diminution" by "proportion" doesn't change the facts, that on average, the U.S. citizen...as is his society... is now running in the red. And the impacts on affected groups, resulting in negatives for the "median" are still more pronounced.