I am not an Expert in this issue but I agree that any MP who has received campaign funds from any special interest group, or personal benefit that was not in the course of a legitimate business transaction in the pre-political career of the MP, should be considered in conflict of interest if they sit in on the making of any decision which in any way determines the possible benefit or detriment of the individual or group that contributed to their campaign. In the incidence where an MP had pre-political business as a writer, musician, or visual artist they may have had worked for publishing corporations etc with a vested interest in copyright laws, but they may also have a valuable practical understanding of how copy wright law will come to be applied hence their knowledge could be useful on a comity determining how the copy wright law be written. Or in lay-mans terms I will not tolerate any corruption and will be quick to let it be know if I encounter any before, during, or after my time as MP.
I hope that this answers you concerns
http://www.dougperry.name/mov/T-9-WhyGPbyOthers.mov
Doug Perry DTCM CBT Green Party candidate Vancouver South