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.
Local winds, on the other hand, are winds such as sea and land breezes. These breezes are produced from the cooling and heating of the air above the coastal shores and the sea. During the day, the warm air near the land rises and draws cooler air inward from the sea.