History of Microsoft Cloud Service Offerings leading to the US Sovereign Cloud for Government

Howdy C_the_S!  Short digestible answer on your inquiry regarding screened US Persons.  Engineering personnel that manage the Azure Government, Microsoft 365 GCC-High and DoD environments are enforced to the high water mark for compliance, to include screen US Persons.  Support incidents may include foreign nationals for product SME's in scenarios that do not require access to the environment.  For example, a support incident for Microsoft Word on a printing issue may be supported by a follow-the-sun support model.  For a more in-depth answer, please refer to the terms and conditions for support explained here: http://aka.ms/USGovCloudSupport under the “Learn More” section.  There is a recording there as well.  Just remember this.  If you are ever in doubt or have a preference for a gov support engineer in the US, you may instruct your team engaged with support to escalate the support incident.