Miss. Code Ann. § 59-9-3: Miss. Code Ann. § 59-9-3

(1) This chapter shall be construed liberally and broadly to effectuate the purposes set out herein and wide latitude and discretion shall be vested in the public authorities charged with the exercise of the powers and duties conferred upon them by this chapter, except as in the chapter otherwise expressly limited.

(2) Nothing in this chapter shall be construed as repealing or altering existing laws affecting ports, and this chapter is to be considered as supplementary and cumulative. The grant of powers to the board of supervisors of such county, the county port authority, the governing authorities of the municipality in which the port of entry is located, and the port commission, where granted herein by reference to existing statutes, shall incorporate such statutes herein seriatim, and the subsequent amendment or repeal of such statutes shall not limit or rescind the powers and authority hereby conferred unless expressly so provided in such amending or repealing statute.

(3) The enumeration of any specific rights and powers contained in this chapter, where followed by general powers, shall not be construed in a restrictive sense, but rather in as broad and comprehensive a sense as possible to effectuate the purposes of this chapter.

(4) A county development commission shall have all rights, duties and powers vested upon a county port authority by this chapter.