Treasury
Bureau of Consular Affairs (CA)
State
A Mexican government-issued passport and a US Government-issued visa.
The US Department of State issues US passports!
Somewhere around 4,000,000 cards have been issued already.
You can get a passport at any US Post Office. You will need to make an appointment.
A passport is issued only to Citizens of the United States, Naturalized citizens and natural born. IF your child is a US citizen by birth or by naturalization they they are entitled to receive a US passport.
If you're a US citizen traveling from Canada to California by land, you do not need a passport until Summer, 2008 (this may change, but is the revised date the Department of Homeland Security issued). You also do not need a passport to depart and return to a US port by sea -- a cruise boat. You do, however, need a government-issued photo ID (such as a drivers license) and a certified copy of your birth certificate.
A government issued passport.
As of July 2008 - Not for a US citizen, just a birth certificate and a government issued photo ID, such as a driver's license. Other nationalities are required to have a passport. no. you'll need a government issued photo id. you will need your birth certificate also to get back into the us. however, a passport would make things easier.
The U.S. State Department.
No, that is the realm of the US State Department.