Translating Pre-Clinical Research to Clinical Patient Care™



Help Us Reach Our Educational Support Goal of $40,000
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Brian Kelly
Danyel Tacker
Amadeo Pesce

Visas and Invitation Letters


If you are planning to travel to the United States and live in a country that requires a Visa, we urge to apply for one as early as possible. Below are suggestions to help you secure a Visa.

  1. Apply at the appropriate location at least 5 months before intended travel. You can check on-line for the wait times for appointments.
  2. Be accurate and specific in completing your application. Avoid mistakes. If needed, attach an additional explanation letter.
  3. Attach evidence of your previous visits to the United States and of your intended return trip to your home country.
  4. Acquire a police clearance, if possible.
  5. Bring all documentation proving your home country connections. Suggestions include: past visas, bank accounts, family, professional position, home ownership, and marriage license.
  6. If you are presenting a paper or speaking at the meeting or are receiving an award or grant, bring copies of correspondence confirming that.
  7. Bring your letter of invitation from MSACL (see below).

Click here for information on Temporary Visas to participate in an MSACL meeting or other temporary travel to the United States.

Click here for the United States Visa application procedures.

Note: A Visa only allows you to travel to the US. You will still have to be admitted at your point of entry. Click here for information from Homeland Security on the Entry Process.

Additional Information: U.S. visa policy permits citizens of certain countries to travel to the U.S. without a visa, when they meet certain requirements, under U.S. laws. Please click here for more information about which counties participate in the Visa Waiver Program.

Invitation Letters

Important: All letters of invitation will be sent via e-mail. Letters of invitation are only provided to individuals who have registered for the conference.

Please provide the following information in your request:

  1. Your full name (Please specify family name and given name)
  2. Title (Dr., Professor, Mr., Mrs., Miss, Ms, etc.)
  3. Organization
  4. Full mailing address
  5. Telephone and Fax numbers
  6. Email address
  7. Additional information such as if you are presenting a paper at the Conference or if MSACL is providing you a grant.

Click here to request a letter of invitation.

Click here for a description from U.S Customs and Border Protection of the process for entering the United States.

The National Academy of Science has established an International Visitors Office with travel information specifically designed for scientists traveling to the US.