Buy-to-Budget Flexibility Act

S 2138 (Buy-to-Budget Flexibility Act) removes specific budget certification requirements for defense procurement of finished military equipment ("end items"). It modifies Title 10, U.S. Code, by eliminating language requiring agency heads to certify budget compliance before purchasing such items and deleting related subsections (b) through (d). This change directly affects defense agencies and contractors managing military equipment purchases, streamlining the procurement process. The bill simplifies budgetary steps without altering funding levels or introducing new financial obligations.