The United States Congress has set forth 5 categories of business immigrant visas.
These 5 categories are ranked in order of importance of need by the U.S. Economy and employers.
All types are determined by yearly levels and per-country levels.
As long as the individual does not have any violations or offenses that would cause them to be deported, these immigrants become permanent citizens – may/could then receive “green cards” – and the indefinite right to live and work in the United States.
Business immigrants are normally sponsored by a U.S. employer based on a demonstrated need, and some may self-petition if they meet compulsory criteria for “extraordinary ability” in their field, or if their entry would be in the “national interest.”
There are protections in place for U.S. workers. Almost all business immigrant cases need Department of Labor verification that no U.S. workers are qualified, able or willing to take the position offered to the immigrant and admittance of the immigrant won’t affect the working conditions and wages of similarly placed U.S. Workers in a negative way. The only exceptions from this requirement are those who are outstanding in their area of expertise or whose inhabitance in the country is in the “national interest.”