President Trump has signed the U.S.-Mexico-Canada Agreement into law, completing a more-than-one-year process of approval since the deal was agreed by the three countries’ heads of state in 2018. The protracted timeframe provides a cautionary tale for other countries looking to sign U.S. trade deals and may lead to more “mini deals” which don’t depend on Congressional approval. USMCA now needs to be ratified by Canada before coming into force in mid-2020. Arguably Mexico has the most to gain in securing its export base, where growth was an anemic 2.9% year over year in December. That rep...