Texas has seen the opposite trend, which has hurt California in recent years. There have been a lot of people moving in, but there have also been a surprising number of people moving out. The reasons for this aren't entirely clear. Family reunification could be one reason since a lot of people from Louisiana have called Texas home ever since Hurricane Katrina ravaged the Gulf Coast. It could also be due to rising property prices.
Either way, Texas's net population has seen a lot of growth, and many seem to be moving out or only living in Texas for a couple of years before moving to another state.