✔ 最佳答案
Your friend should look at this website first:
http://www.foreignlaborcert.doleta.gov/
The process is not really complicated. However, most employers retain a lawyer to do all the works.
Virtually all occupations can potentially qualified for an employment visa. However, the key for a success application is the intended hire can't be used to replace local labor. In other word, the employer has to be ready to show that attempts to hire local labor has been made before importing a foreign labor.
This is why the intended position can't be something simple.