Actually, it proves nothing. His imposition of that tariff is an empty threat, much like his entire tariff plan. Trump has declared a trade war on multiple fronts and he's already backed off. because his handlers have pointed out the obvious. America needs free trade as much as its trading partners do.

The moment he realized that tariffs were raising prices on everything (including eggs and gas) and driving further inflation, he began delaying the imposition. Canada and Mexico's "border deals" were clearly a measure to help him save face, since they effectively changed little about our border arrangements.

Annexation is a not a goal here, it's another hollow and stupid boast from an unhinged man-child who is in way over his head. Public support is not behind this in the U.S. because America can't afford trade wars and military annexation will become America's latest debacle - on the heels of Iraq, Syria, and Afghanistan.