I know some people in the US government who definitely need a hardware key to access computing resources including email. They work for the Dept of the Interior

I know some people in the US government who definitely need a hardware key to access computing resources including email. They work for the Dept of the Interior on science stuff, nothing related to national security or otherwise sensitive info. They mentioned this was a pain in the ass, and a very weird restriction since technically any member of the public can ask for a copy of their emails via FOIA.