Why not a second stimulus?

Reuters reports that Obama is sticking wth his claim that the stimulus stopped the bleeding and spurred an economic recovery, although a slow recovery. If Obama believes what he's saying, then he should be using his influence to push a second stimulus that will get the recovery moving faster. If it's true that the first stimulus had the economic power to get the economy moving in the right direction, then it stands to reason that another stimulus will be effective and that the economic growth will have the multiplier effect to pay for itself and then some. Why is Obama not making this case? There are at least two possibilties for Obama's failure to make the case for a second stimulus: that the stimulus misdirected capital and was a payoff to his supporters, and Obama knows this; that he thinks it's politically damaging to push for another stimulus.

Politics in America has degenerated into an acceptance of dishonesty and manipulation from the occupants of the highest office in the nation. If Obama knows the first stimulus was a pork-barrel bonanza and had little effect on the economy, except a negative effect of scaring businesses, then he is a liar. If Obama truly believes the first stimulus was effective and that further government spending such as the first stimulus will move the economy into real growth and will lower the unemployment rate, but he is not pushing the idea because of political reasons, then he lacks the integrity to be president.

The president and the Democrats in congress who have stated that the stimulus worked, who claim that government spending can generate economic growth, need to be called on their reluctance to push for another stimulus. They can't say automatically, before trying, that the Republicans are blocking them -- if they believe it's true, they should make the case to the public, and a few are, but most are morphing into fiscal conservatives as the elections draw near. When will the media confront this dishonesty?