Why would China and the EU have input on a US merger?
Huawei is trying to make establish domestic Ascend/MindSpore ecosystem, but they are limited by the SMIC process (~7nm). Amount of defects is allegedly rather high, but they are the only "official" game in town (other than smuggled NVIDIA cards or outsourced datacenters in Middle East).
Well they obviously would..
Also EU has promised various significant subsidies to Intel. They obviously has fabs in Ireland and building one in Germany and perhaps even Poland..
If not, look up e.g. Microsoft 's purchase of Activision, both US companies.