Cross-Platform US VPN Development -- 2

I need free VPN recommendations so that i can bid on the US location based project. There is a few US location based project in which i need VPN to change my current address to US based address as required... (Budget: ₹600 - ₹1500 INR, Jobs: Android, Android App Development, Backend Development, C# Programming, Mobile App Development, Network Security, OpenVPN, Windows Mobile)