Sometimes, drama turns unexpectedly into comedy, as is the case with the current $290 Billion Farm Bill. First, congress passes this bill, brimming (as is usual in an election year) with earmarks (better known as “pork”). Second, they send it to President Bush, who vetoes it. Third, congress overrides the veto.
Then the comedy starts. Congress discovers that an aide dropped a 34 page section from the phone-book sized bill before they sent it to the president. So the bill that was passed by congress was not the same bill that was vetoed. Congress tries to pass the 34 page section separately, but Republicans balk.
So now, congress is going to pass the entire bill again, then send it to the president, who will veto it again, and they will (again) override the veto.