http://arstechnica.com/telecom/news/2009/09/big-cable-to-fcc-dont-define-broadband-by-its-actual-speed.ars
So the gist of the article is that the US government wants broadband everywhere. Telecoms are trying to get broadband defined in such a way as to allow them to provide only their most basic and cheapest services to satisfy government regulations. During the course of the discussion, here's what AT&T had to say:
"For residential customers, that minimal set of applications should include the ability to exchange e-mails, participate in instant messaging, and engage in basic Web-browsing," AT&T says. "It also should include the ability to engage in Internet-based education programs, interact with Internet-based government services, and participate in online energy, healthcare, and public-safety programs."
All of which can be done on 56K or even less.