USA Completely untrustworthy when it comes to data
Not withstanding we have the World Trade Organisation, the US loves doing regional (Pacific and Atlantic at this time) and bilateral agreements (think Blunket and extradition).
Look at NAFTA (Canada, Mexico, USA). Freely arrived at, driven primarily by the Americans. Then up comes Hardwood Shingles (for walls and roofing) and Softwood Lumber (Construction 2x4). Canada starts scoring big time, apparently our cold winters harden up the hard and softwood trees and produce a superior product AND it costs less because of the dollar differential.
USA applies unlawful surcharges, Canada goes to mediation and wins. USA then applies taxes in lieu of stumpage charges (replacement trees), Canada appeals and wins. After a third shafting by the USA Canada decides enough is enough and signs an amendment to NAFTA.
Mexican drivers can't bring their vehicles into the US, although NAFTA allows this to happen after 5 years. Another country screwed by the USA.
And here we are again, the old US divide and conquer routine, with a handy bilateral agreement between the UK and the US. Brits better get ready to bend over, Uncle Sams about to do it all over again.
P.S. I hold Canadian, UK and US citizenship, so don't go calling me anti-anything!