Most Americans don't have to look very far back in their family history to find an ancestor who immigrated to America. With the exception of people who are full blooded Indians and people whose ancestors were captured and brought here as slaves - our ancestors immigrated to America. All came to find a better life, to flee from war, to find more prosperous land, to find more freedom.
I look back at my heritage, only three generations on my mother's side, and I don't really know on my father's side when my people came here. My great grandmother on my mother's side was full blooded Indian, Cherokee I have been told. My great grandfather was Dutch, a farmer in southern Illinois. I gather from my mother's stories that my great grandmother, Dora, passed as white. It was not the done thing for a white man to marry an Indian woman. According to my mom, Dora's brothers, Mom's uncles lived in houses in the woods somewhere and mostly hunted and trapped to survive. One of them was a horse trainer. And one of them looked just like the Indian on the Indian head nickel.
The only thing I know about my father's side is that my grandfather was a country doctor in west Texas, San Angelo. He would make house calls in the rural areas, and sometimes be paid with livestock rather than cash ... chickens and pigs. I have no idea when my father's people came to America. His last name, my birth name, was Chambers. A proper English name. Cameron is a family name on my father's side, derived from the Scottish Cameron Clan. And somewhere in my father's family history is Irish also. My father was a veteran of World War II, and his father fought in World War I.
My ancestors on both sides came to America for their own reasons, reasonably to find a better life. They did not come as refugees, they came for the opportunities available in a young country.
The United States only dates back to 1776. Colonists, pilgrims, and explorers came earlier. Few Americans can trace their family history back more than a few generations as having lived in America. We are immigrants. Me, born in Texas, raised in Florida, date my family history back only three generations.
I don't understand how Americans so begrudge immigrants who come here wanting a better life. We all want a better life for ourselves and our children. I can't understand how the descendants of people who fled the World Wars can seek to block those who flee the current wars. And I will never understand, how any American can be so threatened by people entering this vast wonderful country in search of a better life.