I was entering at LAX (may-june) with MPC and there were no signs for it. No one knew about it. Everyone was put in the same q.

Luckily i rushed off the plane and got to almost empty immigration hall with about 10-15 people in front of me. Before i was processed there had 2 other planes land (EK and BR) and suddenly the q was up to escalators. With 4 officers on duty.