Upon its enactment by the Council, any bill, except measures made expressly exempt from the executive veto by the Charter, shall be presented to the County Executive within five (5) calendar days for his approval or disapproval. Within twenty-one (21) calendar days after presentation, he shall return such bill to the Council with his approval endorsed thereon or with a statement, in writing, of his reasons for not approving the same. Upon approval by the County Executive, any such bill shall become law. Upon veto by the County Executive, his veto message shall be entered in the journal of the Council, and, not later than at its next legislative session day, the Council may reconsider the bill. If, upon reconsideration, at least five (5) members of the Council vote in the affirmative, the bill shall become law. Whenever the County Executive shall fail to return any bill within twenty-one (21) calendar days after the date of its presentation to him, the Secretary of the Council shall forthwith record the fact of such failure in the journal, and the bill shall thereupon become law. The County Executive may disapprove individual items in budget and appropriation bills. Each item not disapproved in a budget and appropriation bill shall become law, and each item disapproved in a budget and appropriation bill shall be subject to the same procedure as any other bill vetoed by the County Executive.