NSC has confirmed that Expedite Requests may be faxed to the following numbers: 402-219-6344 or 402-219-6171. Faxed Expedite Requests should include a brief explanation of the qualifying basis for expedite review (see list below) and be accompanied by evidence (preferably limited to one or two pages). Expedite processing is NOT available for premium processing-eligible forms unless the petitioner is a not-for-profit entity.
Expedite criteria include:
1. Severe financial loss to company or individual
2. Extreme emergent situation
3. Humanitarian situation
4. Nonprofit status or requesting organization is in furtherance of the cultural and social interests of the United States
5. Department of Defense or National Interest situation providing that request is submitted by a U.S. Government agency and states that delay will be detrimental to the U.S. Government
6. USCIS error
7. Compelling USCIS interest

However, NSC did not provide further explanations for the criteria listed above.