Separation of Church and State
2
Government needs to butt out when it comes to how I choose to practice my religion. I will pray when I need to, read my Bible where I want to, and be a witness through my daily life every single hour I'm up and running.
Update: The US Constitution's Establishment Clause only states that the government will not advocate one religion over another (e.g. "official religion" policies or similar), or restrict the free practice of religion by individual citizens. What the "separation of church and state" doctrine tries to do is restrict where people can practice their religious beliefs in violation of the Establishment Clause.