With the national debt surging past $26 trillion, we asked top economists, analysts and policy makers why the deficit matters. Paul Krugman said the deficit doesn't matter too much and said instead the great danger is that America spends too little. Danielle DiMartino Booth countered by saying such a large debt puts U.S. sovereignty at risk and Congress needs to step up. Mohammed El-Erian said we need to win the war against the threat of a global depression and secure economic peace by creating

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