I'm going to guess the the Secure Payment System mentioned in the article is this:
<a href="https://fiscal.treasury.gov/sps/" rel="nofollow">https://fiscal.treasury.gov/sps/</a><p>As it says on the SPS website, the they use PKI! ... Wait a tick, is that what Elon wants access to? So he can read/write the federal account ledgers? Or perhaps Elon wants to control the CA behind it. The article mentions very select few personnel have access, which sounds like this... Yeah that might be enough of a reason for a long time, very senior federal employee to call it quits all of sudden, so as to not be the stooge that gives away the keys to Elon (particularly the CA keys). (Pure uneducated speculation)<p>I'm going to guess the explainer for the office(s) in question: <a href="https://en.wikipedia.org/wiki/Bureau_of_the_Fiscal_Service" rel="nofollow">https://en.wikipedia.org/wiki/Bureau_of_the_Fiscal_Service</a>
<a href="https://en.wikipedia.org/wiki/Office_of_Fiscal_Service" rel="nofollow">https://en.wikipedia.org/wiki/Office_of_Fiscal_Service</a><p>Sounds like Wyden is at least asking questions, now that someone at Treasury has fallen on their sword: <a href="https://www.finance.senate.gov/chairmans-news/wyden-demands-answers-following-report-of-musk-personnel-seeking-access-to-highly-sensitive-us-treasury-payments-system" rel="nofollow">https://www.finance.senate.gov/chairmans-news/wyden-demands-...</a>