The New Zealand Green Party has called for a parliamentary inquiry as major food manufacturers Heinz Wattie's and McCain Foods shut local production facilities, raising questions about food security, foreign ownership, and whether New Zealand is too small to maintain sovereign supply chains.Green Party co-leader Marama Davidson said the closures threaten hundreds of jobs and undermine New Zealand's food processing capacity at a time when global supply chains are proving unreliable."We're losing the ability to feed ourselves with our own resources," Davidson told media. "That's a strategic vulnerability no country should accept."The closuresHeinz Wattie's — owned by US food giant Kraft Heinz — announced it will close its Christchurch factory in late 2026, ending production of sauces, soups, and canned vegetables that have been New Zealand pantry staples for generations.About 180 workers will lose their jobs. The company says it will shift production to Australia and source products from its Hastings facility on the North Island.McCain Foods — the Canadian frozen food multinational — is closing its Taranaki potato processing plant, which produces frozen fries and other potato products. That's another 150 jobs gone.McCain says falling potato yields in New Zealand due to weather variability and rising costs make the operation unviable. Production will move to Australia and Europe.Both companies cite "global cost pressures" and — corporate-speak for The Greens argue this isn't just about jobs — it's about losing control over its own food supply. grows enough food to feed . The country exports dairy, meat, fruit, vegetables, and seafood globally. Yet Kiwis increasingly eat processed food made overseas from ingredients that could have been processed locally."We grow the tomatoes, but import the tomato sauce from ," said Green MP , the party's food security spokesperson. "We grow the potatoes, but McCain ships frozen fries from . That makes no sense."The shift means becomes more dependent on global supply chains for basic processed foods. When those chains break — pandemic, war, fuel shortages — Kiwis pay more or go without.Both Heinz Wattie's and McCain are foreign-owned. They're not closing because can't produce these foods efficiently — they're closing because multinational corporations optimize for global margins, not local resilience.For Kraft Heinz, closing saves money by consolidating into larger facilities with economies of scale. For McCain, it's cheaper to ship frozen fries from than run a smaller plant.Local ownership might make different choices. A -owned food company might accept lower margins to preserve domestic capacity. Foreign multinationals answer to offshore shareholders who care about global returns, not 's food security.The Greens want the inquiry to examine whether — essentially, should the government block takeovers of key food manufacturers?This is the same pattern that hit 's fuel refining industry. Major international oil companies shut refineries because they could import refined fuel cheaper from massive refineries.Economically rational in the short term. Strategically stupid in the long term.When conflicts or supply disruptions hit, scrambles for fuel because it has no domestic capacity. The short-term cost savings created long-term vulnerability. learned that lesson with refinery closing in 2022. Now Kiwis are learning it again with food processing.Economic Development Minister rejected the Greens' inquiry call, saying should determine where food production occurs and that government intervention would be Classic National Party thinking: markets are always right, government intervention always wrong.Fair enough in normal times. But these aren't normal times. Global supply chains are fragile, fuel costs are spiking, and geopolitical tensions are rising. Relying purely on market efficiency ignores strategic risk.Minister also noted that still has substantial food processing capacity and that these closures don't threaten food security.True — . But every closure reduces redundancy. When the next crisis hits and global supply chains seize, there's less domestic capacity to fall back on. is wealthier than Pacific Island nations, but faces similar structural vulnerabilities as a small, isolated market at the end of long supply chains.Pacific Island nations have almost zero domestic food processing. They import processed foods at high cost, leaving them vulnerable to price shocks and supply disruptions. When shipping costs spike or global food prices surge, Pacific Islanders simply pay more or eat less. is on a path toward similar dependence. The more processing capacity that moves offshore, the more Kiwis rely on shipping to deliver basic foods.If — with its agricultural abundance and relatively strong economy — can't maintain domestic processing capacity, what hope do smaller Pacific nations have?If the Greens' inquiry goes ahead, it should ask tough questions:1. Should foreign investment approvals for food companies require commitments to maintain local production?2. Are there tax or regulatory incentives that could support domestic food processing without massive subsidies?3. Should maintain strategic food processing capacity the way it maintains strategic fuel reserves?4. What happens to workers and communities when multinationals shut plants — are there transition support programs?5. How much domestic processing capacity is enough to maintain food security during supply chain disruptions?These aren't easy questions, and the answers won't satisfy free-market purists or economic nationalists. But they're questions needs to confront before more capacity disappears.Food, fuel, manufacturing — is slowly losing domestic capacity across critical sectors because multinational corporations find it cheaper to produce elsewhere.It's economically efficient, strategically risky, and politically contentious. The government says markets work. Critics say markets don't price in strategic vulnerability.Both are right, which makes this harder than politicians want to admit.Mate, if loses the ability to process its own food while exporting raw ingredients, that's not smart economics — it's dumb strategy. And there's a whole continent and a thousand islands down here learning the same lesson.