Which of the following cities does not correspond to a major airport code in the USA?

Branson, Missouri does not correspond to a major airport code in the USA. While larger cities like Jacksonville, Florida, and Washington, DC, have well-known major airports (JAX and DCA, respectively), Branson is a smaller tourist destination primarily served by the Branson Airport (BKG) and does not have a major airport code that is widely recognized as significant in the context of the national air transportation system.

In contrast, both Jacksonville and Washington, DC contribute to significant air traffic and have designated major airport codes, making them key players in commercial aviation. Laredo, Texas, though it has its own airport, also does not carry the same level of airport significance as those tied to larger metropolitan areas. Thus, the distinction for Branson primarily rests on its classification as a smaller airport destination in comparison to the others listed.