1) In the 1819 case of "McCulloch vs Maryland" the US Supreme Court ruled that Congress DOES have the power to establish a central bank. The ruling was based on the "necessary and proper" clause of Article I, Section 8.
2) How is Congress doing with fiscal policy (budget) ? And you think the economy will improve if Congress reclaims control of monetary policy from the Fed?
3) The Fed was established to prevent the bank panics that were a regular feature of the economy. If you end the Fed, how will you deal with those issues ?