Art Laffer is an economist with an extraordinarily practical mindset; Stephen Moore is a member of The Wall Street Journal's editorial board. Get them together and the product should be a powerful article, in this case about the relationship between state policies and population growth (no subscription required).
As we've noted before, people are moving from high tax, pro-union blue states to low tax, right-to-work red states. Laffer and Moore write that across the south states are moving to eliminate state income taxes, state capital gains taxes, and state estate taxes. Some states in the midwest are doing likewise, and they are growing.
People vote with their feet.