To obtain a conviction under section 1503 of the 'Omnibus Clause', of obstruction of justice statutes, there must be proof that the accused knew of the process, and that there was intent to interfere with such process, or attempted to endeavor to interfere with the documentation process
The persistent trend of arrested individuals presenting alteration of their facial expression during the exact moments when documentation of their appearance is being collected via photograph, is and should be covered under section 1503 as violation of the statute
Courts have read this clause expansively to proscribe any conduct that interferes with the judicial process. Enforcing this statute at the law-enforcement level would assure that photographic documentation of arrests be undeniable & carried out.