Transcript for Julian Castro, former Obama official, launches 2020 presidential bid

My belly story wouldn't be possible without a country that challenged itself. To the promise. Of America. That was the point of the American dream. It wasn't supposed to be just a dream. America with a place where dreams. Could become real. But the thing is that right now. The relay has been working. Today we're falling backwards. Instead of moving forward. And the opportunities that made America. The America that we love. Those opportunities are reaching fewer and fewer people. Today. We are at risk of dropping the and that's why we're all here this morning. Because we're gonna make sure that the promise that America is available to every one in this. And from my mother so many years ago in this community. That what we want change we don't wait for change we worked for a when my grandmother god here almost a hundred years ago. I'm sure that. He never could've imagined. That is generated later whatever grants would be serving as a member of the United States congress. And the other would be standing with you here today to save these words. I have a candidate for president of the united. And am.

This transcript has been automatically generated and may not be 100% accurate.