Who can possibly be in favor of more funding for NASA when they waste it on pushing things like manned expeditions to Mars? The only time actual human beings should set foot on Mars is after the terraforming is complete. Until then, robots are the cost effective way to go, there and everywhere else in space, from asteroid mining to exploration of Jupiter's moons, or a telescope at the sun's gravity lens. The tiny additional gains of having a human on the scene are not worth the billions in extra features required to support them and bring them back.
Fortunately, private enterprise (in the shape of first generation billionaires with money to burn) is taking over from the losers at NASA, so soon that bureaucratic money sink will become even more irrelevant to space exploration than it currently is.
NASA is so lame, they chose to send (yet another) mission to Mars (this one to investigate marsquakes) rather than send the first ever mission to explore the oceans of Titan for extraterrestrial life. FAIL.