I understand President Johnson passed Immigration Act of 1965. And there was shortage of Doctors and Nurses in the United States during 1960s, 1970s.
People in countries such as India immediately made their kids study medicine so they become Doctors and immigrate to the United States (I have first-hand knowledge of this)
But I am unable to find information on who sponsored these Doctors from abroad. Did the hospital where they did medical residency sponsor them? Or there was no need for sponsorship?
I'm trying to search google (hec, I even asked Indian community forums), but I unable to get an authoritative answer.
For instance, if husband wants to sponsor foreign wife, he files affidavit of support form, then another form to petition, if I understand correctly. Since foreign doctors did not come by spouse visa, how where they sponsored. Did they buy plane ticket to USA and say, "I am here!"