No, the US is (or was) a nation of Anglo-Celt descendants of British colonists. The Emma Lazarus poem is unique to the people from New York City who sponsored the Statue of Liberty project in the 1880's.
"The problem is not immigrants, the problem is welfare and multiculturalism."
Care to tell me how you are going to get rid of welfare and multiculturalism while importing ever more welfare and multicult constituents?
The way it always has, by turning them into Americans.
People come here because they do not like where they are, because America offers them something better.
What they need to learn is why America is better then the nations they left,what makes us different is our individual freedom.
We are nation of individuals, not tribes, racial or ethnic groups, as they are in those nations they left.