On April 23, 2025, Bloomberg reported that the production of Tesla's humanoid robots Optimus faced delays due to the trade war initiated by U.S. President Donald Trump. China, a key supplier of rare earth metals, imposed export restrictions in response to the U.S. tariffs of 145% on Chinese goods. These metals are critical for the creation of Optimus's batteries and electronics, leading to a shortage of components and halting part of Tesla's production lines in Shanghai.