Columbia subject headings:
Harvard subject headings:
Employment forecasting--North America--Congresses.
Free trade--North America
Free trade--North America--Congresses
International economic integration.
Labor market--North America.
Labor supply--North America--Forecasting--Congresses.
Labor supply--North America--Regional disparities--Congresses.
Wages--North America--Forecasting--Congresses.
Wages--North America.
Princeton subject headings:
Foreign trade and employment--North America.
Free trade--North America.
North America--Commercial policy.