Saying that "the ultimate responsibility is with Congress" is like saying "Hillary Clinton never lies to people's face", it just is not substantiated by the facts. The President proposes a budget, the Democrats in Congress, when they're the majority, exceed it, adding programs that are on every pork barrel list that can help with their scheme to steal power of control of Government from the local levels and consolidate it at the Federal level -- this is what they did from the 60's to the mid-90's, and again in 2007-2010, if they do not control Congress, or they only control one House of Congress, the Democrats delay and filibuster until there is a Government shut down because spending is not high enough, not as high as, for the past seven and a half years, President Obama's misguided agenda prefers. Democrats have caused the U.S. to begin fiscal years without a budget as if it were a right of passage. So, the President is supposed to lead, but perhaps he doesn't, but ultimately, he does have the veto, and thus, if you want to look at the last President to currently reduce the deficit spending trend created by liberal Federal "not paid for yet" tax and spenders, it would be George W. Bush, who was thwarted by Democratic Party lies in the slander of the 2006 election. The debt ultimately belongs to Congress, but the cause of the debt is clear.