F-1 Student Nurse

[RNakjse]

Hi, I'm currently a nursing student graduating in May from BSN Program. How can you tell if a hospital will directly sponsor an EB3 without going through a staffing agency? I searched individual hospitals but did not yield specific pages about their immigration team. If I have to get in touch with the right person at the hospital to ask immigration questions, what exactly do I ask and who do I ask to be in touch with? Thank you,