The purposes of this title 1 are—

(1) to provide for the safe and sound operation of the banking system of the United States;

(2) to preserve and protect the dual system of Federal and State-chartered depository institutions;

(3) to ensure the fair and appropriate supervision of each depository institution, regardless of the size or type of charter of the depository institution; and

(4) to streamline and rationalize the supervision of depository institutions and the holding companies of depository institutions.