If the FBI was after me would they let me just get up and walk out during an interview? This is terrible and sucks t know we have a multi-tiered justice system depending on who you are.
Depends on whether you under arrest. If you aren't, you are free to leave -- despite anything they may tell you.
However, even if you are under arrest -- if you indicate you want a private conference with your lawyer, they MUST leave the room themselves and give you the opportunity.