Passport/Visa

[alicats245]

My ignorance is a little embarrassing here. I've searched, government sites, University help pages, hundreds of Google images and several Wiki articles and think I managed to put the facts together but can't find a definitive answer.

On a Mexican passport, would a US F1 student visa be a page in the passport or a separate document? If separate, is it laminated, like a driver's license or green card?

Thanks.