ON MAY 18, the newly appointed New Jersey public advocate, Ronald Chen, released his report on the use of eminent domain. Commissioned by Gov. Corzine, Chen’s study is a model of judiciousness and tenacity. It sends a clear message to those bent on abusing the power of eminent domain–in other words, not for public-use highways or hospitals, but to generate “public purpose” revenue–the jig is just about up.