professor trefler wrote in an e-mail message citing further research..
in addition he said, there is absolute on evident that the trade agreement worsened income inequality the big story is that lowering tariffs set off a productivity boom.
formerly sheltered canadian companies began to compete with a compare themselves with more efficient american businesses
Some went under ,but others significantly improve operations.
The productivity gains were hugs.
in the formerly sheltered industries most affected by the tariff cuts, labor productivity jumped percent
,at least half form closing inefficient plants. "this translates into an enormous compound annual growth rate of 1.9 percent " he wrote
but closing plants is not the whole story or even half of it. Among export oriented industries,which expanded after the agreement , data from individual plants show an increase in labor productivity of 14 percent . Manufacturing productivity as a whole jumped 6 percent "The idea that a simple government policy could raise productivity so dramatically is to me truly remarkable " Professor Trefler said