Too little too late and by design. By the time any sort of trial comes around Bush will be gone and it will all be swept under the carpet in the guise of, "...it's time to heal... let's look forward, not backward... etc. etc." Congress has no desire to enforce anything. They got Bush to back all the spending they wanted so long as they turned a blind eye to everything he and his cronies were doing despite the changeover of congress which sent a clear message that the people were fed-up. Pelosi has no balls at all. She travels, improves the menu in the congressional lunch room, and buys flowers. The rest of congress isn't all that interested either. They know people are fickle, won't care once a new president is in office, and hey, they got to bring home the bacon.
Do not operate under the fallacy that the leadership of congress gives a damn about the rule of the constitution or US code or anything else. They care about themselves, their power, and the money. Bush has thumbed his nose at congress and the constitution since the day he came into office. Eight years have passed, including a change of power in congress, and still nothing is done but a few wrist slaps and the prosecution of underlings who are more than ready to take a bullet for their master. The US federal government is corrupt and indifferent to the laws which are supposed to frame it. What are we going to do? Get out of our La-Z-Boy recliners and protest (in free-speech zones of course)? Hell no! We're fat and lazy. So long as we have our bread and circuses the government can do what it wants even if it's openly illegal.