I couldn't remember. "After Kennedy's assassination that November, Congress began debating and would eventually pass the Immigration and Naturalization Act of 1965, co-sponsored by Representative Emanuel Celler of New York and Senator Philip Hart of Michigan and heavily supported by the late president's brother, Senator Ted Kennedy ."
Defer to your research on the second part. I do know there is resentment to this day by Irish Catholics to Protestants, not all.
I remember it all VERY well; I don't have to do any research. There are just some things that stick with one.
And back then, there were a LOT of articles about immigration, with country breakdowns, which I read.