You obviously have serious reading comprehension problems. Apparently the part that says "Of course, that was at a university in the south (LSU) back in the 1970's." was invisible to your eyeballs.
At the time LSU was one of the major channeling points for incoming college foreign students due to their "English as a foreign language" program, so a "low immigration" point it was definitely NOT. The students would go to LSU their first summer to "get English" and then would move on to their target degree university in fall or spring semester. I probably saw more foreigners over a four year period than most folks do in a lifetime.
But I would one hell of a lot rather have foreign immigrants to the US who have good educations than street drug dealer fodder that comes here illegally.
The other point you miss is that acculturation doesn't happen in colleges....it happens in kindergarten and elementary school. By high school age, the children have assimilated. This happens UNLESS the families are ghettoized so they only interact with other immigrants of the same culture, which, in turn, applies almost solely to illegals, who band together to avoid "la migra".
I grew up in NYC and urban North Jersey. LA and LSU are low immigration environments compared to the rest of the country today and certainly were in the 1970’s. LSU in the 1970’s had few immigrants compared to the average university today, don’t be ridiculous. Foreign students are 20% or more of undergrads at many colleges, with another 20% non-assimlated 2nd generation.
Old people like you from low immigration states are a big problem because you simply do not understand the reality of what is happening. Children of highly educated immigrants are today’s left wing campus activists and Hillary voters. They are not assimilating and haven’t for decades. You have no idea what you are talking about, telling us stories about foreign students in the 1970’s.
Old boomers have no idea what it is like to go to foreign dominated universities today. The percentage of immigrants you experienced was small by today’s standards even if it was high by 1970’s standards.