Well, it's false to say bush and obama banned MV and incandescent...
They simply approved a bill to make lamp standards more strict. Manufacturers could either choose to improve existing technoledgy (incandescents, MV, T12 fluorescent, magnetic fluorescent ballasts), or phase it out in favor of newer technoledgies. The standards for Lumens Per Watt, CRI, ballast losses, and other similar key elements in lamp designs were simply made more strict and the maufacturers simply decided "the hell with the old technoledgy".
The way i see it, the reason for this was that they could make more profit selling newer technoledgy stuff without the common man realizing it. If older lamp prices simply skyrocketed, people would know something's up, but if a new technoledy is introduced at a high price, even if it's as cheap to make as an incandescent, people wouldn't catch on since the price was always high. Plus, if they decide to make "green" technoledgy, they get funding from the government so it's no-brainer to them.
I do like LED for small parking lot's lighting, but it's not controlled enough for streetlighting IMO...