This article contains reasonable responses to these five "myths" about NAFTA:

1 NAFTA has transformed the U.S. economy.
2 NAFTA has put countless Americans out of work.
3. "Fixing" NAFTA would be easy and cost-free.
4 Making NAFTA's labor and environmental regulations stricter would benefit U.S. workers.
5 Renegotiating NAFTA should be a priority for the new president.