In some states, YES. For example Louisiana has statute requiring convicted prostitutes to register as sex offenders (which is being challenged in Federal court
http://www.nola.com/crime/index.ssf/...ation_for.html).
In TX "compelling prostitution" (but not prostitution itself) is an offense that gives rise to registration requirement. Thus PIMPS are at risk in TX more than Jane Provider.
For the full version of the TX registration law, see
http://www.statutes.legis.state.tx.u.../htm/CR.62.htm.
Hope that answers your question.
19Trees