Md. Code, Land Use § 14–202

(a) Except as otherwise provided in Title 20, Subtitle 7, Part I, Title 24, Subtitle 2, and Title 25, Subtitle 3 of this article, Article XI–E of the Maryland Constitution does not apply to the Commission, the metropolitan district, or the regional district.

(b) Neither the Commission, the metropolitan district, nor the regional district is a “municipal corporation” under Article XI–E of the Maryland Constitution.