Reforms are often introduced in one region and afterwards adapted by other regions. This paper analyzes a model where policy diffusion can be explained by competition for mobile resources. I provide conditions under which initially symmetric regions realize reforms sequentially and a reform initiated in one region is afterwards adapted by another region. Forward-looking agents anticipate the policy convergence and respond less to the reform than the current difference in policies would imply. If agents' mobility is very high, moreover, regions can be trapped in a situation where no reform is realized at all.