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 can be caused by small temperature differences that  exist within larger systems. Local winds can be strong, as with a  downburst on the leading edge of a supercâ¦ell. They can also produce  locally strong winds, such as tornadoes. Local winds can cause  property damage and harm to people and animals.