The nation’s unemployment rate has been hovering at nearly nine percent since 2009. But not every state is suffering an employment crisis. In the remote, windswept state of North Dakota, job fairs often bustle with more recruiters than potential workers. The North Dakota unemployment rate hasn’t risen above five percent since 1987. In the state's oil country, unemployment hovers at around two percent, and pretty much everyone who wants a job—as long as they are old enough and not incarcerated—is employed...