in inventory, or otherwise maintain ready access to (through requirements contracts or otherwise) a type of product included in the entity's bid, the Secretary may terminate such contract unless the Secretary finds that the failure of the entity to maintain inventory of, or ready access to, the product is the result of the discontinuation of the product by the product manufacturer, a market-wide shortage of the product, or the introduction of a newer model or version of the product in the market involved. . (b) Codifying and Expanding Anti-Switching Rule Section 1847(b) of the Social Security Act ( 42 U.S.C. 1395w–3(b) ), as amended by subsection (a)(1), is further amended— (1) by redesignating paragraph (11) as paragraph (12)