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DownloadLearn more about how the immigration process works and help you with your immigration concerns and questions. The Charleston USA Immigration Law Center is here to support you in your goal to become a United States citizen.


This Act, signed in 2000 (AC21) affects the filing of certain H1B petitions as follows;

1. it allows certain foreign nationals who are in the process of obtaining their permanent residency, based on employment, to change employers (AC21 Portability) after their; labor certification has been completed and approve, after their I-140 has been filed & approved and while the I-485 is being processed. The new employment must be in the same or a similar occupation classification and the I-485 must have been pending for at least 180 days,

2. it provides 1 year extensions to H1B workers who have had an I-140 or labor certification filed more than 365 days prior,

3. it allows a non immigrant alien who was previously issued a H1B visa or status to work for a new employer once the new employer files for that alien,

4. it does not require the secondary employer to again proceed with Labor Certification,

5. it negates the need of filing for a new H1B when a corporation is restructured, merger, acquisition or consolidation,

6. it exempts H1B workers employed by institutions of higher education, non-profit entities and government research organizations form the annual visa cap limitation,

7. it requires that those workers with 6 year prior H1B status not be counted toward the annual cap limitation, unless authorized for a new 6 year limitation.

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