The immigrants are Americans, that is what an "American" is, all Americans are immigrants, or their ancestors were, unless you are a Native American Indian.
My ancestors have been in the USA for so long that I do not even know where they came from, but I am smart enough to know that they migrated from somewhere.
Everyone has their "people," the Jews have their people, and the Italians have their people, and everyone has an ethnic group and they get together and celebrate their group, and I do not have any group, I am just an "American." And I am a "Californian." I will do my DNA in Ancestry.com eventually, and I want to research to learn about who my ancestors were. Anyhow, America is a nation of immigrants.
And we need the people. We have dying cities, and dying farm towns, which need the new people. And we have an aging population as all of the Baby Boomers get older and older. We need the new young people, and the families, and the people to repopulate and to breath life into our shrinking cities and shrinking farm towns.
Those immigrants are future Americans, we need to let them in, and we need to make them legal.
Salute,
Tony V.