"Across the United States, local governments are moving to prevent outdoor camping by the homeless, according to advocates for the nation's nearly 600,000 homeless, estimated by the U.S. Department of Housing and Urban Development." "But Dr. Robert Okin, a psychiatrist and homelessness expert, said the camps are a symptom of the lack of affordable housing and other services. Disbanding them doesn't solve the problem, it just disperses it, he said."