Instruct: Classify a review as either positive or negative.
Query: outstanding book on complicated subject

Hanson knows more about the Mexican immigration dilemma in his little toe than all the windbag TV pundits combined. He's a farmer who has lived in the midst of the evolving California immigrant situation for the last four decades. The personal observation point from which Hanson works is at once no-nonsense, compassionate, and lucid. He writes terrific prose in the manner of William Langewiesche, graceful and immersed in finely-crafted physical impressions. Destined to be a definitive classic on the subject.