The United States is known as a nation of immigrants and as a melting pot. The fact that it is known in these ways shows us how immigration has affected US culture.
From immigrants, we have gotten many things. The impact of these immigrants can be seen in things that are important and things that are relatively trivial. On the trivial side, we have a wide variety of foods in the US that have come from the various ethnic groups that have immigrated to the US. On the more important side, we have an identity as a nation that welcomes people of all types. We have a culture that includes people based not on where they comes from but on the extent to which they want to belong.
Immigration has made the United States into a melting pot of foods, names, looks, and ideas.