This passage clearly requires that all federal powers be explicitly granted in the Constitution, though they need not only come from Article 1.
Yup. The federal power I'm talking about is in article II, section 3, the power of the President to "faithfully execute" the law. Federal police is normally understood to be "necessary and proper" w.r.t. this, just as local police is an agent of execution for local law.
Yup. The federal power I'm talking about is in article II, section 3, the power of the President to "faithfully execute" the law. Federal police is normally understood to be "necessary and proper" w.r.t. this, just as local police is an agent of execution for local law.