tax rates would be 90% (for those evil enough to be born white & male)
The "pursuit of happiness" would be replaced with 3 federal agencies, each with different agendas and conflicting set of federal oversight.
2/3 of all employees in the US would work directly for the gov't. There would be no states, really. They would still be lines on a map, and would still collect their own set of taxes, but they would be powerless as all laws would be overturned or put on judicial review as soon as they were passed.
Voting would be done by ACORN, who would take a billion $ in cash, wonder around the urban areas, and then report who the president was.
There would be almost no one in jail, except for bible-thumpers and people who believe in spanking their children. [unless the spanking was intended as a sexual advance].
Marriage would be the union of 1 person (maybe) and almost anything they could drag into a court. A woman, a dog, your favorite tree, the six people that you had sex with last night before your cocaine high gave out and you crashed, etc.
fully 1/2 of all lawsuits would be brought on behalf of the earth, trees, sky, rabbits, etc.
Killing a human would get you 60 days of reorientation, but kicking a dog would probably get you a needle in the arm.
It would be against the law to drill for oil, anywhere on the planet... and what little army we had would be all militant vegans, running around the planet burning car dealerships (in other countries, we would never allow them to be sold here), blowing up oil wells, etc.
And you can get anything you want from government, if you fill out enough forms and wait in line long enough.