Any rules in the natioal level with the BSA could never be enforced as local Cub Scout packs and Boy Scout troops could prevent gays from joining the packs and troops.
Camp outs, jamborees, Order of the Arrow—all involve Scouts from different units who would have different policies. The National policy must be maintained.
If this happens there will be a flood of lawsuits against local troops and packs. The National organization may have deep pockets to defend against this but our local troop sure does not. They will pick them off one by one.