Hello, You can apply for B1/B2 Tourist?visitor visa first at the US embassy. Being a nurse I don't think it is that hard to obtain one. When you enter the US, apply for a Nurse's Certification exam. When/If you pass the exam you'll be sponsored by a hospital and would be able to start to work within a month or so. You will be sponsored by a hospital because there is a scarcity of nurses right now in this country and when you pass the certification exam and become a certified nurse, getting employment and sponsorship would not be a problem. Good Luck