As Donald Trump unleashes round two of his trade wars, an analysis of the way global commerce has rewired since his first presidency shows how Vietnam, Mexico and Canada are exposed this time around as a new era of American protectionism unfolds.

U.S. officials are considering whether they can strike a deal with China that would ramp up its purchases of American goods and investments in the United States.

President Trump had previously imposed an additional 10% tariff on all Chinese imports, resulting in retaliatory tariffs from China.