Section 21. Approval of local laws by elective chief executive officer

Every local law shall be certified by the clerk  after  its  passage  by
  such  body  and  shall  be  presented  to  the  elective chief executive
  officer, if any, for approval by him. If such officer  approves  it,  he
  shall  sign  it  and return it to such clerk; it shall then be deemed to
  have been adopted. If he disapproves it, he shall return it to the clerk
  with his objections stated in writing and the clerk  shall  present  the
  same  with  such  objections to the legislative body at its next regular
  meeting and such objections shall be entered in its record,  journal  or
  minutes   of  proceedings.  The  legislative  body  within  thirty  days
  thereafter may reconsider the same. Such  an  elective  chief  executive
  officer who is a member of the legislative body shall not be entitled to
  vote  on  such reconsideration. If after such reconsideration such local
  law is repassed by a vote of at least two-thirds  of  the  total  voting
  power  of  the  legislative body, exclusive of such officer, it shall be
  deemed adopted, notwithstanding the objections of such officer. Only one
  vote shall be had upon such reconsideration. The vote shall be taken  by
  ayes  and  noes,  and  the  names of the members present and their votes
  shall be entered in the record, journal or minutes  of  proceedings.  If
  within  thirty  days  after a local law shall have been presented to him
  such officer shall neither approve it nor return it to  the  clerk  with
  his objections, it shall be deemed to be adopted in like manner as if he
  had  signed it. At any time prior to such adoption or to the return of a
  local law by such officer, as the case may be, the legislative body  may
  recall the same and reconsider its action thereon.