Well, China will surely block this, just like how it blocked the Qualcomm attempt to buy NXP (https://www.reuters.com/article/us-nxp-semicondtrs-m-a-qualcomm/qu

Well, China will surely block this, just like how it blocked the Qualcomm attempt to buy NXP (https://www.reuters.com/article/us-nxp-semicondtrs-m-a-qualcomm/qualcomm-ends-44-billion-nxp-bid-after-failing-to-win-china-approval-idUSKBN1KF193 https://www.reuters.com/article/us-nxp-semicondtrs-m-a-qualc...). Otherwise ARM would become a US company, and then the US would have another weapon in their arsenal to sanction China's tech companies (e.g. Huawei).