As long as you have a US visa with you, you can also enter Mexico.
On an ESTA visa waiver, you can stay in the US for up to 90 days per visit.
A B1/B2 visa allows you to stay in the US for a maximum of 6 months per visit.
A B1 visa holder can typically stay in the US for up to 6 months per visit.
A person with a B2 visa can typically stay in the US for up to six months per visit.
A visitor visa holder can typically stay in the US for up to 6 months per visit.
On a B1/B2 visa, you can typically stay in the US for up to 6 months per visit.
Yes, US citizens need a visa to visit Argentina.
Yes, US citizens need a visa to visit Kazakhstan.
Guam is a US Territory, and as such, just like any other US owned soil, a Visa is not required as long as you are a US citizen. Saipan also does not require a Visa to visit.
People from some countries are allowed 30 days without a Visa. Others are allowed 6 month tourist visit with out special Visa. Contact you local US Consulate or visit the US Imigration website for info on your country.
Yes you can, as long as your passport is valid