In-case you missed it with all the campaign shenanigans of the past couple of weeks:

The EPA has recently made a couple of decisions which go against all their internal scientists and further show how much BushCo. will politicize anything: First, the EPA denied the right of CA to set their own, stricter, standards on automobile emissions. As CA goes, so goes the nation, and the automobile manufactures don't want that. There is precedent for CA to set their own standards, as they've done it many times in the past. Many other states were awaiting this decision as, they want to do the same thing. Apparently, that's not good enough. By EPA justification, since CA doesn't have problems that are any worse than anyone else's, the administration doesn't think that they have the right to do anything about the problems they do have. This has caused the scientists and legal counsel of the EPA to openly state that they have no confidence in the BushCo. puppet director. Remember this is an issue being pushed by a Republican governor, who actually sees the importance of it, and for all of CA's reputation, it's not that blue of a state. If my memory serves me correctly, other than Grey Davis, CA has had a republican governor for the majority of the past 20 years.
Secondly, the president just directly intervened in the decision on regulating seasonal ozone levels nationwide. Again, going against the scientific and legal council within the EPA. If it wasn't perfectly clear that this administration doesn't care about actually enforcing laws, such as the Clean Air Act, which specifically states that economics can't be considered, because the regulations have to be made on health and welfare standards only. President Bush broke the law (again), by intervening in this decision.
Look, I understand that Pelosi can't actually push impeachment, it has to come from elsewhere in the party. If Bush is impeached, Cheney has to be impeached as well, that puts Pelosi as President, and it would be politically impossible for her to push it. That doesn't mean that we can't have others push it. Wexler and Kucinich have called for it. We need to encourage every Dem in the house to sign on. Cheney first, then Shrub.