Does the USA have any laws specifying the minimum warranty for products? I notice that with Dell’s new $499 laptop, the “base” price only includes a 90 day limited warranty.

In New Zealand we have this law called the Consumer Guarantees Act that gives you certain rights relating to faulty goods - basically if something breaks unreasonably soon after purchase, you can always take it back for repair/replacement/refund. If a laptop with a 90 day warranty breaks down within a year or two, that’s probably unreasonable, so you can call on the CGA to get yourself a new one.