The American left has always promoted Catholic immigration, just as they are in modern times, for instance the 1965 bill.
“However, if there is one man who can take the most credit for the 1965 act, it is John F. Kennedy. Kennedy seems to have inherited the resentment his father Joseph felt as an outsider in Boston’s WASP aristocracy. He voted against the McCarran-Walter Act of 1952, and supported various refugee acts throughout the 1950s.
In 1958 he wrote a book, A Nation of Immigrants, which attacked the quota system as illogical and without purpose, and the book served as Kennedy’s blueprint for immigration reform after he became president in 1960. In the summer of 1963, Kennedy sent Congress a proposal calling for the elimination of the national origins quota system. He wanted immigrants admitted on the basis of family reunification and needed skills, without regard to national origin. After his assassination in November, his brother Robert took up the cause of immigration reform, calling it JFK’s legacy. In the forward to a revised edition of A Nation of Immigrants, issued in 1964 to gain support for the new law, he wrote, “I know of no cause which President Kennedy championed more warmly than the improvement of our immigration policies.” Sold as a memorial to JFK, there was very little opposition to what became known as the Immigration Act of 1965.”
The 1965 Immigration Act was pushed by the Left period. Jews, Catholics, Asians, blacks, etc. They wanted to remake America to look like the rest of the world. And some Reps joined them.
"Born of liberal ideology, the 1965 bill abolished the national origins quota system that had regulated the ethnic composition of immigration in fair proportion to each group's existing presence in the population. In a misguided application spirit of the civil rights era, the Kennedy and Johnson Administrations saw these ethnic quotas as an archaic form of chauvinism. Moreover, as Cold Warriors facing charges of "racism" and "imperialism," they found the system rhetorically embarrassing. The record of debate over this seismic change in immigration policy reveals that left-wingers, in their visceral flight to attack "discrimination," did not reveal the consequences of their convictions. Instead, their spokesmen set out to assuage concerned traditionalists with a litany of lies and wishful thinking.
Chief among national concerns was total numeric immigration. Senate floor manager and Camelot knight-errant Ted Kennedy, D-Massachusetts, assured jittery senators that "our cities will not be flooded with a million immigrants annually." Senator Daniel Inouye, D-Hawaii, further calmed that august body, insisting "the total number of potential immigrants would not be changed very much." Time has proven otherwise. Average immigration levels before the 1965 amendments took effect hovered around 300,000 per annum. Yet 1,045,000 legal immigrants flooded our cities in 1996 alone.
Senator Hiram Fong, R-Hawaii, calculated that "the people from [Asia] will never reach 1 percent of the population." Even in 1965, people were willing to admit that we have a reasonable interest in not being inundated by culturally alien foreigners, and it was considered acceptable to say so on the floor of the Senate. Try that today, even as a supposed conservative! (Asians currently account for three percent of the population, and will swell to near 10 percent by 2050 if present trends continue.)
The only remaining Congressman who had voted on the 1920s quotas, Representative Emanuel Celler, D-New York, insisted, "There will not be, comparatively speaking, many Asians or Africans entering this country." Today, the number of Asians and Africans entering this country each year exceeds the annual average total number of immigrants during the 1960s.