Title 18 of the United States Code (USC) is the federal criminal code of the United States. Section 3607 of Title 18 specifically pertains to the expungement of records of certain controlled substance offenders. However, there is no established "18 USC 3607 form" in the legal context. It is possible that you may be referring to a specific application or document related to the expungement process under Section 3607, but without additional information, it is difficult to provide a more specific answer. It is recommended to consult with a legal professional or review the relevant legal resources for further clarity on this matter.