Executive Summary

I. Introduction

II. Literature Review

III. A Spatial Equilibrium Model
1. Labor Supply across Areas
2. Labor Demand across Areas

IV. CPS Data and Empirical Results
1. Data
2. Difference-in-Difference-in-Difference Results

V. Robustness Check
1. Census Data and Results
2. A Time Series Graph

VI. Conclusion and Discussion

References
Appendix