A family from Mexico who arrived here this morning, legally, has as much right to the American dream as the direct descendants of the founding fathers. ... when the blood of the sons of immigrants and the grandsons of slaves fell on foreign fields, it was American blood. In it you could not read the ethnic particulars of the soldier who died next to you. He was an American. And when I think of how we learned this lesson, I wonder [how] we could have unlearned it.