My reading is that it gives authority to federal courts to determine if a law has or has not been violated. What would the other intent be of creating a judicial branch? (Not said with snark, just curious).
"You give (a) Authority to a system of federal courts to judge whether or not a law has been violated..."[1]
[1] Findlay, B.A. and Findlay, E.B., 1919. Your Rugged Constitution: How Americas House of Freedom is Planned and Built. -.