Singaporean politicians are leading their constituents on sold-out tours across the causeway to indulge in Malaysia’s peak durian season, with itineraries featuring all-you-can-eat buffets, shopping and multi-course dinners.At least seven members of parliament (MPs) have organised trips this month for Singaporean citizens to get their fill of the spiky and pungent fruit in neighbouring Malaysia, where prices are expected to fall this month in light of abundant supply.The outings, some lasting...