| Sec. 45.1 | General. |
| Sec. 45.2 | Priority date of applicants. |
| Sec. 45.3 | Control of numerical limitation. |
| Sec. 45.4 | Period of validity of immigrant visas. |
| Sec. 45.5 | Redetermination of admissibility if visa validity extended. |
| Sec. 45.6 | Issuance of immigrant visa upon redetermination of admissibility. |