The Congressional Budget Office (CBO) has released a report that says that House Resoultion 1, a.k.a. the Obama Administration's stimulus package, will inject only $526 billion into the economy by the start of 2011 . That amounts to 64% of the $825 billion plan, and short of the 75% that White House Budget Director Peter Orszag promised lawmakers last week. Both parties are using the report to back their positions on the bill. GOP leaders say the CBO's figures show the Obama Administration is exaggerating the speed and effectiveness of the plan. House Speaker Nancy Pelosi responds by saying it confirms what her party had been saying: "T he Congressional Budget Office's first analysis of the entire House recovery bill makes clear that which experts have been saying all along: the American Renewal and Reinvestment Act provides immediate stimulus to help create jobs and makes long-term, targeted, and responsible investments to keep our nation's economy growing for years to come." The sticking point of the moment appears to be about timing, and just how much the plan accomplishes in the first year and a half. CBO Director Douglas Elmendorf explained that the predictions in the report are based on anticipted delays between when federal agencies receive money and when they are able to pay the funds out. Frequently in the past, in all types of federal programs, a noticeable lag has occurred between sharp increases in funding and resulting increases in outlays. Based on such experiences, CBO expects that federal agencies, states, and other recipients of funding would find it difficult to properly manage and oversee a rapid expansion of existing programs so as to spend added funds quickly as they expend their normal resources. The seasonal nature of some spending also affects the speed at which activities can be conducted; for example, major school repairs are generally scheduled during the summer to avoid disrupting classes. You can read the CBO report here , and Elmendorf's comments here .