The E-2 visa is unlimited in duration and currently holds no quota or annual capital requirement. People who qualify for an E-2 visa will have invested considerably into an existing company registered in the United States of America.
In that context, based on the data provided by the US Census Bureau, nearly 20% of the US population has an impairment of hearing, vision, cognition, ambulation, or difficulty with self-care or independent living.
Once the couple marries, the foreign citizen can adjust status to become a lawful permanent resident of the United States (Green Card holder). Although a K-1 visa is legally classified as a nonimmigrant visa, it usually leads to immigration benefits.