Keshab u hit the bull's eye. Most of the nursing jobs in US need associate degree. For H1b you have to have at least bachelors degree. So even if you do bachelors degree here in US, it is very hard to find nursing jobs that need bachelors qualification and for H1b you need at least bachelors. So finding a job which needs bachelors degree is tough. So getting a job and having bachelors degree does not make you eligible to apple for H1b, it is also the job qualification requirements. I don't mean to discourage you but only want to make you clear.