The controversial project now awaits an administration decision on whether to permit or deny it.
The temporary injunction was prompted by a lawsuit from 70 landowners who don't want the pipeline on their property.
The Nebraska Supreme Court's decision reversed a lower court that had blocked the proposal and cleared the way for a U.S. State Department ruling on the plan.
Dr. Martin Salia, 44, was treating patients at a Sierra Leone hospital and was evacuated to the U.S.
The network's medical correspondent was reportedly seen waiting in a parked car outside a Princeton restaurant in the midst of her 21-day quarantine