Nebraska Revised Statute 21-2,160
Bylaw increasing quorum or voting requirement for directors.
(MBCA 10.21) (a) A bylaw that increases a quorum or voting requirement for the board of directors may be amended or repealed:
(1) If originally adopted by the shareholders, only by the shareholders unless the bylaw otherwise provides; or
(2) If adopted by the board of directors, either by the shareholders or by the board of directors.
(b) A bylaw adopted or amended by the shareholders that increases a quorum or voting requirement for the board of directors may provide that it can be amended or repealed only by a specified vote of either the shareholders or the board of directors.
(c) Action by the board of directors under subsection (a) of this section to amend or repeal a bylaw that changes the quorum or voting requirement for the board of directors must meet the same quorum requirement and be adopted by the same vote required to take action under the quorum and voting requirement then in effect or proposed to be adopted, whichever is greater.