Simmering in the background is a rancorous debate on whether to restrict Chinese AI models. Investor Steven Rattner wrote a glowing account of his recent trip under a headline that warned: “I Just Returned From China. Ryan Hass, a former China adviser in the Obama administration, thinks the US is making the same mistake again. China’s tech advances are real enough, but it’s unclear whether the economic returns can justify the massive investment costs. Logan Wright, the author of Broken China, guesses that growth is now running at no more than 1% — and may even be zero.