May remain in the United States as long as the principal J-1 Visa holder has valid J-1 status.
Details:
J-2 spouses and dependents can hold employment authorization.
If principal J-1 visa holder is subject to the two-year home residence requirement, the J-2 dependent will also be subject until the principal J-1 satisfies or waives the requirement.
Granted in 3 year increments, up to 6 years allowed (extentions in some cases).
Details:
Specialty occupations are those that require at least a bachelor’s degree or higher.
H-1B extensions beyond six years are possible, under certain circumstances, under certain circumstances, including a pending green card beyond 365 days or approved I-140.
Employer must always file for H-1B on behalf of employee and incur fees.
May remain in the United States as long as the principal H-1B Visa holder has valid H-1B status.
Details:
H-4 Dependents cannot hold employment authorization.
Certain very limited conditions allow H-4 nonimmigrants to seek employment and remain in the United States beyond the six-year H-1B period of admission limitation.
Student may remain in the US as long as they are enrolled in the school to complete their academic program.
After the program ends, the student will have 60 days to transfer to a new academic program or apply for OPT if eligible.
Details:
The F-1 Visa (Academic Student) allows the student to enter the United States as a full-time student at an accredited college, university, seminary, conservatory, academic high school, elementary school, or other academic institution or in a language training program.
Student must be enrolled in a program or course of study that culminates in a degree, diploma, or certificate and awarded by a school authorized by the US. government to accept international students.
Student must be enrolled as a full-time student at the institution.
Student must be proficient in English or be enrolled in courses leading to English proficiency.
Student must have sufficient funds available for self-support during the entire proposed course of study.
Student must maintain a residence abroad which they have no intention of giving up.