China’s purchases of Treasuries help hold down US interest rates – possibly by as much as one percentage point – which provides broad support to other asset markets, such as equities and real estate, whose valuation depends to some extent on Chinese-subsidized US interest rates. And, of course, hard-pressed middle-class American consumers benefit hugely from low-cost Chinese imports – the Walmart effect – that enable them to stretch their budgets in an era of unrelenting pressure on jobs and real incomes.