Obama and the Vision
Bush set up the Vision; what does his successor have planned?
Basically, it doesn't look like Obama has too many changes to make to the Vision. Space exploration is not his first priority, between global warming, health care reform, Iraq and other headline issues, but he has expressed full support of the plan, from campaign stump speeches to presidential press releases.
Obama is also restarting an old space authority: the National Aeronautics and Space Council. This council will take in input from a variety of governmental departments with space-related interests, including the Department of Defense, the Transportation Department, and of course NASA itself. This will oversee all space related programs, organizing them and making them more efficient, and advise the President on these matters.
The President is also hoping to increase private sector interest in space technology, not just for “space tourism", but also for collaborating on government research and development projects. This will not only increase the base from which space science has to work with, but also allow for more flexibility and options.
Another important addition to all this: climate research. NASA's array of satellites and climate scientists have proven to be incredibly powerful tools in climate change research, and continuing to observe the situation is absolutely critical to not just the US, but the entire world.
That being said, with the deficit being what it is, cuts have to come from somewhere and NASA looks like a likely target, despite urgent requests for a funding boost. Theoretically, it will not be Vision programs that will be slashed but other research and development projects, though reviews of these programs have also been ordered. Keeping the Vision programs intact will ensure that these long term investments are there for when the economy turns around. For a detailed breakdown of the budget, check out this May Space.com piece.
For more information on the Vision for Space Exploration and how it's coming along, check out the NASA Exploration website. There are also numerous sites out there that specialize in current space policy, such as Obamanauts. For the official list of goals that Barack Obama has laid out for NASA, check out this PDF from BarackObama.com.