Quotes.  1 That's my child! My property! (To Angharad)  2 Do not, my friends, become addicted to water, or it will take hold of you and you will resent its absence!.  3 Mediocre!.  4 Return my treasures to me, and I myself will carry you through the gates of Valhalla. You shall ride eternal. Shiny, and chrome. (To Nux)
While most U.S. Passport numbers are nine digits and most U.S. visa numbers are eight digits, some are not. Last year, we implemented a workaround for entering document numbers that do not fit the usual pattern. That workaround is no longer necessary as we have implemented a permanent fix as part of our June 2011 upgrades.
For Non-Immigrant Visa, Visa number is the RED Number on the Visa itself. This answer is from USCIS. It is the RED number - check out this CIS Form that advises under Visa # (not the control number that begins with a year) Please refer to the related link for more information. 1  If you mean a non-immigrant visa such as a B1, B2, F1, H1B, then it's on the visa itself. The visa would be the nice-looking laminated sticker (the new ones, at least) on your passport, and the number would be a long number on the top of the visa.