USCIS changed their API behavior, again. Sorry for the delay. Still working on it.
IOE Case Stats
IOE N-400
IOE I-765
IOE I-90
IOE I-821
IOE I-130
IOE I-485
IOE I-131
IOE I-290B
IOE N-600
IOE I-751
IOE I-140
IOE I-129
IOE I-485J
IOE I-526
IOE I-539
IOE I-134A
IOE I-134