How long does it take to get a travel visa – American citizen traveling to Mexico?

I’ve never had a travel visa, I’m wondering from the time I walk into the office to the time it is delivered, how long is the process of obtaining one?
Thanks
Yea, I messed up, I meant Passport! Looks like I’ll have to post another question!

Is it necessary to be with a travel agency when applying for tourist visa to Russia?

I would like to travel with my friend to Russia alone, without being part of a tourist group. However, it is my understanding that there is a higher rejection for tourist visa application without an accompanying letter from a travel agency. Is this really the case? Also, because my itinerary is required for the Russian [...]

How to travel to Israel without having the entry visa stamped in my Passport?

I am an American citizen, and need to travel to Israel. Several Arab countries will not allow you to enter their country with a Israeli visa stamped in a passport, I will be visiting 6 Arab countries later in the year. I have also heard several horror stories from people who have entered Arab countries [...]

Can I travel within the domestic US on a foreign passport with an expired VISA?

Specifically, air travel. Do they even bother looking at the VISA for domestic flights?
No US government ID.
credit card jokes are funny, but this is a serious question