our borders every day making canada and mexico our largest exporters by far. in 2016 they totaled one third of u.s. exports. the amount of goods and services exported to both countries tripled since nafta's signing from $149 billion in 1993 to $582 billion in 2016. things like groceries, cars, and fuel. at the same time, u.s. imports from both countries things like electronics, livestock, and machinery, have also gone up. and much of the merchandise that comes in contains parts or materials that are sourced in the u.s. the wilson center, a non-partisan think tank in washington, offers this illustration of what we are talking about. mexican oil comes into louisiana where it gets refined into a raw plastic. that plastic is then shipped to a factory in the midwest where it gets molded into a part in a car dashboard which is then sent back to mexico to be installed