Question: The US Supreme Court ruled that treaties can be repealed or modified for the purposes of US law just like what by any subsequent Act of Congress?
Answer: The Supreme Court ruled in the Head Money Cases that "treaties" do not have a privileged position over Acts of Congress and can be repealed or modified (for the purposes of U.S. law) by any subsequent Act of Congress, just like with any other regular law.
 A single-select problem: Is the question answered in a satisfactory fashion?

Possible answers:
 (a). yes;
 (b). no;
(a).