It’s not clear whether Atlanta and its smaller kin — Charlotte, Raleigh, Nashville, Jacksonville — will resume their robust growth. They’ve suffered high unemployment lately.

But Texas has been doing very well. If you draw a triangle whose points are Houston, Dallas and San Antonio, enclosing Austin, you’ve just drawn a map of the economic and jobs engine of North America.

Texas prospers not just because of oil and gas, but thanks to a diversified and sophisticated economy. It has attracted large numbers of both immigrants and domestic migrants for a quarter century. One in 12 Americans lives there.

America is getting to look a lot more like Texas, and that’s one trend that I hope continues.