> unless it's also in-line with The Constitution. The Supreme Court is itself the sole arbiter of this exception, so in practice they can cite it whenever they

> unless it's also in-line with The Constitution. The Supreme Court is itself the sole arbiter of this exception, so in practice they can cite it whenever they want to. The Federalist Papers are cited in a number of supreme court rulings. While one could argue that they are equally relevant to the Declaration, it would be hard to argue that they are less relevant.