House Bill 1453, sponsored by Lamberth, seeks to amend Chapter 568 of the Private Acts of 1939, which has undergone several amendments since its inception. The bill specifically proposes the deletion of Section 11 in Article XII, with the remaining sections being renumbered accordingly. This change is part of an effort to update the legal framework governing the City of Portland.

The bill stipulates that it will only take effect if approved by a two-thirds (2/3) vote of the City of Portland's legislative body. The presiding officer of the legislative body is responsible for proclaiming the approval or disapproval of the bill and certifying it to the secretary of state. While the bill will become effective immediately for the purpose of approval or rejection, it will only be fully effective for other purposes once the legislative body's approval is secured.