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.
Global winds are winds that blow From the poles, in which they act as a heat transfer system. Global winds are due to the unequal heating of earths surface.ocal winds are caused by unequal heating within a small area.Global winds are created from all around the Earth due to breezes that make Wind.