No need to change anything. Article IX Section 7c of the CB&L Says it all:
C. Assessments may be levied on the members in the employ of any airline by the respective
Master Executive Council to cover extraordinary expenses for any strike or other benefit purposes,
and for any other lawful trade union purpose, by a majority vote by secret ballot of the members of
such Master Executive Council, or by a majority vote of the valid ballots returned of the membership
of such airline voting in a membership referendum conducted by secret ballot under Association
Voting Procedures.
They had a choice, and they chose not to put it to a vote because they were afraid the pilots would shoot it down with the lack of information they were, and still are presenting.
Which is exactly why you need to change your MEC policy manual to require your MEC to send this sort of thing to a vote. Don't give them a choice next time.