US Federal is 1-party and some states are 2-party. This is why you get the "this phone call may be recorded for quality assurance" notifications—because you hav

US Federal is 1-party and some states are 2-party. This is why you get the "this phone call may be recorded for quality assurance" notifications—because you have now been informed as the second party. But the above is for private conversations. If the interaction is in a public area, then there isn't an expectation of privacy, so the number of parties informed is moot, but this has been the subject of legal disputes notably when it comes to police being recorded. If anything it would seem like government representatives would have less expectations of privacy when conducting official business, but it's been argued.