FAQs

Travel restrictions are constantly changing so we suggest foreign travelers contact the U.S. Embassy Consulate for the latest rules. Please note that visa processing times may be longer than in the past.  

After identifying that a visa is needed, foreign travelers should contact the U.S. Embassy Consulate here. Look for posted time frames on the Internet or call the Consular Section to hear recorded information about visa processing time frames. 

ISA recommends following these guidelines for getting a visa for entry into the United States:  

• Request a letter of invitation to attend ISA Sign Expo 2025 at least four (4) months before ISA Sign Expo. You must finish the registration process and payment to receive the visa invitation letter from ISA.  
• Applicants should present their entire trip itinerary, including travel to any countries other than the United States, at the time of visa application.  
• Provide evidence that you intend to return to your country of residence; applicants should provide proof of “binding,” or sufficient, ties to their home country or permanent residence abroad. This may include documentation of the following: family ties in home country or country of legal permanent residence, property ownership, bank accounts, and/or an employment contractor statement from an employer stating that the position will continue after the dates of the meeting.  

Letters of Invitation can be requested during the registration process.