Good news for hackers! Jailbreaking is no longer an illegal practice in US! The Library of Congress had recently approved the exemption of some 1998 Federal Laws that finally allowed jailbreaking practice for all smartphones. It means now you can legally jailbreak and unlock your iPhone!!
Downloading and installing “illegal” applications is now legal as well. You can also legally make your phone to work on another carrier, and break some security protections on any applications in order to “correct the security flaws”.