Presumptive Republican presidential nominee Donald Trump has picked his running mate — Indiana Gov. Mike Pence. A former congressman, Pence is in many ways what Trump is not: a strong social conservative with deep ties to the party's establishment. As such, there is a record of deep disagreements between the two names on the top of the GOP ticket this year.
Pence has been a longtime, aggressive advocate of trade deals like the North American Free Trade Agreement and the Trans Pacific Partnership. Trump wants to revoke NAFTA — ratified by Congress and signed into law by Bill Clinton in 1993 — and do away with the Obama...