The employer must file paperwork called labor certification with US Dept of Labor. If approved, then, the employer will file application for immigrant visa with CIS. If all goes well, you will get a visa at the US embassy in Kingston, and with it, The process can be very confusing for most employers and so I suggest you ask your aunt to speak to an experienced immigration attorney.
Answered on Jan 31st, 2014 at 4:07 PM