Neither Trump nor Son gave many details about the proposed U.S. investments. Funding for SoftBank's investments could come from various sources under the group's management, including capital projects, the tech-focused Vision Funds, and Arm, in which SoftBank holds a roughly 90% stake. The figure is believed to include plans such as a $1.5 billion investment in OpenAI. Son visited Trump in 2016 after his first presidential election win and pledged to invest $50 billion in the U.S. SoftBank launched its first Vision Fund the following year, ramping up investment in U.S. startups. Calling Trump the "double-down president," Son joked Monday that he had to double SoftBank's investment and said he would consider raising the figure after prodding by Trump.