Do you believe Congress must understand all the details of how cellular networks or Internet service providers work in order to legislate concerning these topics? This is exactly why they have hired staff to do research for them and to inform them of the issues.
I would hope they learn as much as they can about someting before they try to regualte it. Creating rules for things you don't understand and have no ability to comprehend while simultaneously being bribed I mean lobbied by special interest groups, Is begging for disaster. Oh look we are in the middle of one. Because of that.
They don't understand the internet or computersand look at the results.
Net-Neutrality battles, SOAPA, ACTA, DMCA, NSA Spying wire tapping software/infrastructure sabotage, "Illegal" numbers, Internet kill switch, Software Patents, and more.
None of these would be the issue if these people would bother to learn about what they were making rules about. At the very least they could read the wikipedia entry about the tech they make rules for.