If you wish to travel outside the U.S. and return to the U. S. during your approved appointment period, you must:

1. Carry a passport that will be valid for at least 6 months into the future from the day you return.
   To avoid problems when you return, your passport should be valid for at least the full length of the O-1 approval notice. If not, immigration inspectors may issue you an I-94 card with a period of stay only until the expiration date of your passport and not for the full length of or remaining time on your approval notice. If this happens and you stay in the U.S. beyond that date, you will be in violation of immigration regulations.
   
2. Have a valid O-1 entry visa stamp in your passport (unless you are a Canadian citizen).
   If you do not have an O-1 visa, you must obtain it at the U. S. consulate in the country you are visiting. If you have ever stayed in the U. S. beyond the date of your authorized permission to stay, you may not be able to obtain a visa in any country other than your country of citizenship or permanent residence. If you believe this restriction applies to you, please consult the ISSO or IAO before leaving the country.
   
3. There are a number of factors that may contribute to delays in having a visa issued to work in the United States.
   Heightened security measures instituted since September 11, 2001 have resulted in delays in visa issuance abroad. Security checks for those whose field of research or study is deemed to be "sensitive", interview requirements for almost all non-immigrant visa applicants. The links to individual consular posts at http://www.usembassy.gov may be good sources of current information. For more detailed information, refer to Potential Delays in Visa Issuance.
4. Carry the original Form I-797 which shows your O-1 approval for Columbia University.
   If you do not have it, please request it from the ISSO or the IAO. Do not give the original I-797 to the Consulate when applying for a visa. Bring the original to present to the consular officer but leave only a copy of the I-797 with your application. You may need the original I-797 in the future and it is extremely difficult to replace.
   
5. Have a letter from your department that confirms your salary and employment dates.
   
6. Have your original I-94 card.
   If you entered the U.S. in O-1 status, you should have a separate I-94 card. The I-94 card will be taken from you upon departure from the U. S. and you will receive a new one upon your return.

If you do not have a valid O-1 visa (and are not a Canadian citizen), you will need to apply for a visa at a U. S. Consulate overseas. You will need items 1,4, & 5 above. Remember, it is easiest to obtain a visa in your home country. If you have ever stayed beyond the date allowed in the U. S., you may be required to go to your country of citizenship or permanent residence in order to obtain a visa for the U. S. Do not give the original I-797 to the Consulate when applying for a visa. Bring the original to present to the consular officer but leave only a copy of the I-797 with your application. You may need the original I-797 in the future and it is extremely difficult to replace.

If you are traveling to a country other than that of your citizenship (commonly called a "third country"), always call the U.S. Consulate in that country before leaving to determine what the procedures and time-frame for obtaining a visa, as each Consulate may request different documents to issue the visa. If difficulty in obtaining the visa is foreseen, you may wish to have the United States Citizenship and Immigration Services (USCIS) attest to your O-1 status in the U. S. by requesting a cable to be sent to the U. S. consulate in the third country. This is done by filing an I-824 Request for Consulate Notification, which must be filed by Columbia University. Please contact the ISSO or the IAO for cost and details.

Dependents in O-3 Status - If you are traveling with your dependents, be certain to carry all items listed above; your dependents must carry valid passports with valid O-3 visa stamps. If your dependents will be traveling alone, they must carry the original form I-797 and employment letter in addition to passports with a valid O-3 visa stamp. Please note that your dependents in O-3 status cannot be issued an O-3 visa if you do not have an O-1 visa in your passport. If you made a change of status application in the U.S. and have not traveled abroad to obtain the H-1 visa, your dependents are not eligible for O-3 visas at a U.S. consulate.

Travel to Canada or Mexico

If you are traveling only to Canada or Mexico for fewer than thirty days, you will not need to obtain a new visa stamp to return to the U.S. To qualify for this privilege, you must:

1. Be in lawful O-1 status
2. Have an unexpired I-94 card with you (do not surrender it when you leave the U.S.)
3. Have a passport valid at least six months into the future on the day you return
4. Travel only to one of the destinations above and for fewer than 30 days. For example, you cannot use revalidation to enter Canada, depart to another country, return to Canada and then return to the US within 30 days.
5. Must not apply for a visa while in Canada or Mexico.
   If you apply for a visa while in Canada or Mexico, you must wait for it to be issued before you return. If your visa application is denied, you are not allowed to use "automatic revalidation" to return to the U.S. and must travel to your country of citizenship to apply for a new visa.
6. Have a current original I-797 Approval Notice in your possession
7. Have a O-1 visa (expired or valid) in your passport that matches the immigration status described by your I-94 card (If you have changed your non-immigrant status in the U.S., the visa may correspond to your previous non-immigrant status before the change was granted.)
8. Be a citizen of a country other than Syria, Iran, Iraq, Sudan, North Korea, or Libya (If you are a citizen of Syria, Iran, Iraq, Sudan, North Korea, or Libya you do not qualify for this privilege. You are required to present all documents described under General Information, above, including a valid visa for your current immigration status.)

If you are in O-1 status, you must have a valid passport, a valid I-797 Approval Notice and an I-94 card. If your I-94 card and I-797 are valid for O-1 status and will not expire during your trip, you are eligible to enter the United States again even if your O-1 visa has expired, unless you have applied for a new visa.

Other Travel Matters

Canadian visas: Persons from many countries are required to obtain a Canadian entry visa when entering Canada from the U. S. Visas may be obtained from the Canadian Consulate General at 1251 Avenue of the Americas (at 50th Street., tel. 596-1600). Consult the Canadian Consulate General for visa regulations concerning your country before making travel arrangements.

Mexican visas: Tourists cards or visas may be required for travel to Mexico. Information is available from the New York Consulate General of Mexico, 27 East 39 Street, telephone (212) 217-6400.