The arguement in congress was that WIFI internet connections are the wave of the future and that it needs much higher wattage/range than is currently allowed. It also seemed that it would be for licensed (IE: $$$$$) use only (RE: Comcast, Verizon Et Al). Seemed like they wanted to ban private WIFI owners from setting up themselves as ISPs, get the big companies to make more money and ruin the current 2.4Ghz range for all secondary users (if not ban them out-right). Remember that 802.11 WIFI and other devices use the exact same frequencies as RC radios. Essentially, it could make all other 2.4Ghz equipment either useless or illegal.
If it would mean alot more money for the Gov't in licensing fees then it has a good chance of being passed at some point. Esp. since more people want universal wireless internet access than fly RC airplanes.