Why does the US government require me to use ID.me when it's a website located in... Montenegro?

**.me is the Internet country code top-level domain (ccTLD) for Montenegro**

>TreasuryDirect is transitioning to use ID.me for secure login and identity verification. Optional use of ID.me for signing in begins on September 13, 2026, and it will become strictly required for all TreasuryDirect logins starting October 28, 2026. \[1\]