KTNV Channel 13 has an interesting story about the Marshals.  Supposedly their jurisdiction is only certain parks, buildings and Fremont Street but they are enforcing traffic laws on the Freeway and other state laws outside where they have jurisdiction and should be calling other Law Enforcement to do the work.

https://youtu.be/Z_SZO_6-V9U?si=ZHsgOQZ6iDNafwi1