The Short Version
This claim is not supported by current evidence. As of 2026, the US nominal GDP (~$31.8T) exceeds China's (~$20.7T) by over $11 trillion — a gap that cannot close by 2030 at projected growth rates. The major institutions once cited for a 2030 overtake (notably CEBR) have revised their forecasts to the mid-2030s. Goldman Sachs, Citi, and CEBR now all project the overtaking around 2035–2036. China also faces structural headwinds including a shrinking workforce and declining productivity growth.