Before June 2009

The Obama middle class tax cut will be history and deemed unfeasible. Instead everyone will receive a tax increase when the Bush tax cuts expire or are repealed.

Somewhere in the world, likely Iran or China, they will cause an international incident which will be the first test of Obama. If Iran doesn't have nuclear weapons now they will have. Probably what will happen is that Iran threatens Israel and Israel attacks them bringing condemnation from an Obama administration, the UN, and the Middle East.

There will be lots of new laws passed that are under the term "budget" that will be packaged together and only require a 51 vote margin to pass. This will nullify the filibuster and the only power that the minority has to protect the country from voluminous amounts of new government programs that will be adding to the trillion dollar deficits. None of the programs will be useful or helpful in any way. They will just be more layers to the bureaucracy onion.

These are just three off the top of my head that will likely happen. No tax cut, international crisis, more big government.