what do you think about immigration to the United states? 
I have a very mixed opinion, But I believe that immigrants should get some respect, they are human too after all. 
I recently became a US citizen, i love this country. Immigration has been a major source of population growth and cultural change
That's great and welcome, the US is the land of opportunity after all. 
thank you :) in fact, US has a larger immigrant population than any other country 
I guess that's no surprise, the US is the richest country to be in for jobs. 
yup, in 2015 there were around 47 million immigrants. hard to believe
That's nearly a quarter of the total population of the US and that is indeed hard to believe. 
The civil rights movement led to the replacement of some ethic quotas with per country limits
Sounds like the civil right movement had a lot of change to our country back then.