Democrats Evolve The holding of power necessitates responsibility. This year's Democratic Party platform commits to "free and fair trade" and boasts that the Obama Administration has filed trade cases against China at twice the rate of the Bush Administration. But unlike in 2008 (and the Romney campaign this year), there is no stridency about "currency manipulation." Indeed, governing reveals the limits to such blunder. The Democrats pledge to complete Trans-Pacific Partnership (TPP). There is a commitment to farm subsidies, which they argue Republicans would weaken even though the threat against them comes from the extremes of both parties. The most interesting change is the new document's commitment to greenhouse gas emission reduction...