; or (2) to preempt a State or local government from providing additional protections to employees of labor organizations who allege violations of subsection (a), provided that such protections do not limit the ability of members of a labor organization to remove their elected or appointed officials through a democratic ballot. (e) Unenforceability of certain agreements (1) No waiver of rights and remedies Notwithstanding any other provision of law, the rights and remedies provided for in this section may not be waived by any agreement, policy, form, or condition of employment, including by any predispute arbitration agreement. (2) No predispute arbitration agreements Notwithstanding any other provision of law, no predispute arbitration agreement shall be valid or enforceable to the extent that it requires arbitration of a dispute arising under this section. .