At least some of the equipment (EUV machines being the big example but even things like high bandwidth oscilloscopes and many other tools we never hear about) a

At least some of the equipment (EUV machines being the big example but even things like high bandwidth oscilloscopes and many other tools we never hear about) are already export restricted (export is still possible but requires approval). Whether the executive could place a blanket "no export" on all of it without a legal battle is a very different question. Edit: this is only for whether or not the equipment can leave US soil. Whether it can be sold to a foreign company but stay in the US is a different question (the answer is yes if I had to guess)