WHY AMERICANS ARE TURNING AGAINST FREE TRADE: When the proceeds of growth are not widely shared, the consensus in favor of pro-growth measures cracks.

I also think that (1) we’ve reached the point of diminishing returns, since trade is pretty free already; and (2) both political parties are so un-trusted that everyone is suspicious of passing big new catch-all agreements with lots of unread fine-print, especially when lobbyists have been laboring for years.