I am very troubled that it has become necessary to circulate this memo.
Though Director's Workbook Section 2.2 is directed at dealings with Federal Government officials it would appear to be applicable when the actions of Board members are intended to impact an ARRL Board action intended to change federal law.
2.2
....... "It is important for the policies of the Board to be communicated to federal government personnel in a consistent manner, and to present a position of unity at all times."
If this is a matter of conscience for the individuals concerned the options are to support the majority decision or, if they feel compelled to advocate a contrary position, resign from the Board.