Canada does not want to give up its supply management programs for dairy and poultry in the NAFTA 2.0 negotiations, and now it reportedly also wants to maintain the carve-out protecting another sector.Following are a few short, cynical takes on trade policy developments.Better Trade Deal: Last year Donald Trump ran to the left of Democrats on the subject of trade, and now U.S. trading partners looking for more reasonable leadership in Washington confront Senate Democrats trying to recapture their protectionist mojo. They’ve released their “Better Deal on Trade and Jobs,” which means complaining that Trump doesn’t go far enough in blocking out unfair foreign competition. Democratic leaders would add more aggressive trade enforcement action,...