Summers Gives His Final SpeechLawrence Summers defended the Obama administration's economic policies in his final speech as the top White House economics advisor. He also gave a thumbs up to President Barack Obama's tax-cut compromise, saying experts broadly agree the economy would get a boost from it. "An extension of unemployment insurance, a payroll tax holiday, refundable tax credits and business expensing. That's why independent estimates of job creation over the next year or two are being revised up," he said. Even so, Summers warns Washington must address the ballooning deficit, calling it a potential "tax on our future."