Can I file online using TurboTax from Mexico, or will there be a firewall that requires me to only use TurboTax online while in the U.SA.?

[DoninGA]

You can use TurboTax to e-file a tax return from anywhere in the world with an internet connection.  There is no firewall preventing your e-filing from outside the US using either the TurboTax online editions or desktop editions.

[xmasbaby0]

You can e-file from anywhere in the world that has internet access.     Are you asking about e-filing?   Or are you trying to ask about using the desktop download or the web-based online TurboTax software?