"[We have to] ensure that in the years ahead we are welcoming the talents of all who can contribute to this country and that we’re living up to the basic American idea that you can make it here if you try.

That’s the idea that gave hope to José Hernández. I want you to think about this story. José’s parents were migrant farm workers. And so, growing up, he was too. He was born in California, though he could have just as easily been born on the other side of the border, if it had been a different time of year, because his family moved around with the seasons. So two of his siblings were actually born in Mexico.

So they traveled a lot, and José joined his parents picking cucumbers and strawberries. And he missed part of school when they returned to Mexico each winter. José didn’t learn English until he was 12 years old. But you know what, José was good at math and he liked math. And the nice thing is that math was the same in every school, and it’s the same in Spanish as it is in English.

So José studied, and he studied hard. And one day, he’s standing in the fields, collecting sugar beets, and he heard on a transistor radio that a man named Franklin Chang-Diaz—a man with a surname like his—was going to be an astronaut for NASA. So José decided—right there in the field, he decided—well, I could be an astronaut, too.

So José kept on studying, and he graduated high school. And he kept on studying, and he earned an engineering degree. And he kept on studying, and he earned a graduate degree. And he kept on working hard, and he ended up at a national laboratory, helping to develop a new kind of digital medical imaging system.

And a few years later, he found himself more than 100 miles above the surface of the Earth, staring out of the window of the shuttle Discovery, and he was remembering the boy in the California fields with that crazy dream that in America everything is possible.

Think about that. That’s the American Dream right there. That’s what we’re fighting for."