 Paul Krugman, a recipient of the Nobel Prize in Economics, attributed Texas' job growth to its growing population, which he said decreased wages and attracted businesses to the state.According to Krugman, the high population growth in the state was due to a high birth rate, immigration from Mexico, and internal migration of other Americans, due to the warm weather and low cost of living – especially the low housing prices from less restrictive zoning policies, which he described as the "one area where Texas does in fact do something right.