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But people don't just vote at the ballot box or by their choice of newspaper subscriptions. They vote with their feet. And by that measure, the state that publishes Krugman's columns--New York--and the state where he's a college professor--New Jersey--are losing big-time.
Ironically, one reason Texas continues to have problems with poverty, despite its population growth, is that people don't just move between states. They also move from other countries in search of opportunity. For about a million people, that meant moving across the border from Mexico to Texas. They start low on the economic ladder but do tend to move upward over time.
For some reason, politicians most sympathetic to those immigrants are clueless about why U.S. citizens move from state to state.
Let people live where they can be free, and get rich.