The 22 states with right-to-work laws grew 15 percent in the last decade. The other states grew just 6 percent.
The 16 states where collective bargaining with public employees is not required grew 15 percent in the last decade. The other states grew 7 percent.
Now some people say that low population growth is desirable. The argument goes that it reduces environmental damage and prevents the visual blight of sprawl.
But states and nations with slow growth end up with aging populations and not enough people of working age to generate an economy capable of supporting them in the style to which they've grown accustomed.
Slow growth is nice if you've got a good-sized trust fund and some nice acreage in a place like Aspen. But it reduces opportunity for those who don't start off with such advantages to move upward on the economic ladder.
The most rapid growth in 2000-10, 21 percent, was in the Rocky Mountain states and in Texas. The Rocky Mountain states tend to have low taxes, weak unions and light regulation. Texas has no state income tax, no public employee union bargaining and light regulation.
Texas' economy has diversified far beyond petroleum, with booming high-tech centers, major corporate headquarters and thriving small businesses. It has attracted hundreds of thousands of Americans and immigrants, high-skill as well as low-skill. Its wide open spaces made for low housing costs, which protected it against the housing bubble and bust that has slowed growth in Phoenix and Las Vegas.
The states, said Justice Brandeis, are laboratories of reform. The 2010 Census tells us whose experiment worked best. It's the state with the same name as the county that's the center of the nation's population: Texas.