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.
cause of local winds. sea breezes. They are a type of local wind that blow from the sea to the land. They happen when the land heats up faster than the water, so the warm air over the land rises, and the cold air over the sea moves to take the warm air's place. land breezes. These happen at night. They are the opposite of sea breezes.