I solved the federal budget deficit

You can try your hand at it as well, at a New York Times interactive article.  You will need to make choices about a) increasing taxes and b) cutting spending (there's no option to "grow our way out of" the deficit).

As you make your decisions, changes are displayed for both short-term (2015) and longer-term (2030) budgets.  The site then provides a link for your decision matrix, which you can then share with friends.

Here's my balanced budget; I'm not claiming it's the best possible one - I just clicked boxes for two minutes.  Have a go for yourself at this starting link.

Reddit discussion thread here.