Labor certification is  a United States of America immigration process step. Its stated goal is to protect U.S. workers and the U.S. labor market by ensuring that foreign workers seeking immigrant visa classifications are not displacing equally qualified U.S. workers..
How are local winds and global winds differ? local winds-are winds that blow over short distances caused by unequal heating of the earths surface in a small area. global winds-are winds that blow around the earth from â¦ the north pole to the south pole.
(19) Between about 35 degrees North latitude and about 55 degrees North latitude, surface winds generally blow from the west, and are known as westerlies. (20) Global winds drag on the oceanâs surface, causing the water to move in the direction that the wind is blowing and thus create surface ocean currents.