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Visa Letters


If you are a non-US citizen planning on attending ACSAC, transiting into the United States from abroad, you may require a visa from the US Department of State. For information on visa requirements, please visit the Department of State web page at

Letters of Invitation

The conference will be glad to issue a letter of invitation to attend the conference for individuals who have registered and paid for the technical program portion of the conference OR pre-registered and paid a $500 advance to be applied to registration. If you pay for the conference and your visa is denied, the conference will refund your registration or advance fee less a nominal handling charge. Requests must include a valid registration confirmation number or funds transfer acknowledgement, and the associated payment or funds transfer must be completed. All other requests will be ignored.

Note: Refund requests of the conference fee after a visa letter has been issued, will result in notification to the US State Department and/or US Embassy in country of origin.

To request a letter of invitation, please fill out the visa letter request form.

The conference will need sufficient time to process your letter request.

Pre-registration Payment/Visa Letter Request Process: For those individuals who anticipate lengthy delays in securing a visa, a visa letter request/pre-registration option is available. Contact the conference using to inform us of your intent to request early transmittal of a visa letter. Arrange to transfer a pre-registration advance payment from your financial institution. Include information describing the funds transfer service you wish to use (e.g., bank wire, TransferWise).

If you are using an international bank wire, send the funds as follows. Note that Hanscom Federal Credit Union does not use a SWIFT Code or IBAN for incoming wire transfers.

Wire to: EasCorp Federal Credit Union, 35 Corporate Drive, Burlington, MA 01803
ABA (routing number): 211391773

For further credit to : Hanscom Federal Credit Union
Routing number : 211380483

For final credit to : ACSAC, Account Number 78381612

If you are using a different funds transfer service, such as TransferWise, the funds destination is:

Hanscom Federal Credit Union
Routing number: 211380483, Account number: 78381612

Please forward a scanned copy of the funds transfer receipt to the email address. Upon receipt of your funds transfer, the conference pre-registrar will send a reply email with a Pre-registration Funds Transfer Acknowledgement number. Complete the visa letter request form, including your Pre-registration Funds Transfer Acknowledgement number.

Transmittal of Letters

We will email you the letter or upon request send it via postal mail. We do not mail letters directly to the consulate; most consulates have indicated they do not have the facilities to file such letters pending an application. This letter must be requested in sufficient time to accommodate the delays inherent in international mail and the local embassy/consulates processing time. We will endeavor to have your letter in the mail within 7 working days of the receipt of your request. Late requests may not arrive to you in time, and you may not receive your visa. Expedited mail can be offered upon request by registered attendees only and at their expense.


It is the attendee's responsibility to apply for any visas and request any letters of invitation. It is the attendee's responsibility to demonstrate that they are properly classifiable as visitors under U.S. law to consular officials. ACSAC and ACSA cannot ensure that a visa will be granted to you. That determination is at the sole discretion of the Embassy/Consulate. Should your application be denied, ACSAC cannot change the decision of the governmental agency.