If any section, subsection, paragraph, sentence, clause, phrase or provision of this chapter, or regulation adopted under this chapter, shall be adjudged by any court of competent jurisdiction to be invalid, such adjudication shall not affect, impair or invalidate the remainder thereof, but shall be confined in its operation to the section, subsection, paragraph, sentence, clause, phrase or provision of this chapter or regulation directly involved in the controversy in which such judgment shall have been rendered.