I would say yes but it would also be good for you to be doing a little more than just working as a nurse for that 20+ years. for example it is good to: Examples that could strengthen the proposed endeavor include: * Improving healthcare access in medically underserved communities * Addressing a significant nursing/healthcare workforce problem * Developing or implementing innovative patient-care programs * Improving maternal health, infectious-disease control, chronic-disease management, or other significant public-health outcomes * Healthcare quality and patient-safety initiatives * Nursing research or clinical research * Evidence-based practice implementation * Healthcare technology or informatics * Leadership in large healthcare initiatives * Training programs that improve the nursing workforce * Publications, presentations, awards, professional recognition, or significant accomplishments

I am a nurse also from Brazil with military background and I’m still waiting my 140 it’s 300 now.

You don’t necessarily have to handle the entire EB-2 NIW process yourself. I got mine done with the help of experienced professionals who helped prepare the petition, organize the evidence, and present my qualifications properly. You can consider getting professional assistance as well, especially with a strong nursing background.