President Bush made one of his rare public comments on broadband Thursday, promising that the United States will "do better" in increasing broadband penetration rates. But he didn't say how. Taking audience questions after an economic address in the Washington area suburb of Sterling, Va., Bush was asked about legislative efforts to limit municipal efforts to establish Wi-Fi networks and America's falling rank in worldwide broadband penetration rates. "It's interesting . . . because I laid out the opposite vision, which was that broadband ought to be available and accessible all throughout the country by a set period of time,"...