I actually know exactly what he was talking about and how you were mistaken. I found it when looking up the population discrepancy. He didnt say anything about births, but tweeted a link with the title of the study that referenced an article about texas gaining 9 Hispanics for every 1 white.
That shift included things like the birth rate discrepancy (1.4) but that was a fraction of the difference.
So now you know why I was throwing out there that you might have misheard him? To be fair, he could have said births later, since you claimed to have heard it from him directly, and this references a tweet. But I wouldnt wager much on that.
But we can stop misquoting him now, right? Simply stating the original study gives the facts that back up the demographics change.
Here's a link that even includes the original article.
A retweet this morning raised a few eyebrows at the Texas Senator.
crooksandliars.com