I thought my opinion was clear in that regard, and as you appropriately characterize, no questions as to bias or motivation or reasons to misrepresent quotes would be allowed in. There I believe we would decidedly fly in the face of established case law.
The speaker has ulterior motives
( z1 motive :mod ( z2 ulterior ) :domain ( z3 person :ARG0-of ( z4 speak ) ) )