I actually think the best thing to say about the Mary Cheney issue is not to argue about it, not to make jokes about turkey basters, et al - I think it's best to maintain a discreet silence and wish the Cheneys, as a family, well. Silence in this instance would be neither congratulations or approval - just tolerance.
If indeed the homosexual lobby does turn this into a political issue, that's another matter.
Regards, Ivan