From 2003 to 2007, the tax cuts helped push real GDP up 15.2%, or more than 3% a year. And, as Avik Roy notes in a recent Forbes piece, "the wealthy actually contributed more in taxes after the 'cuts' went into effect." In 2003, the top 1% in incomes paid $256 billion in taxes. In 2007, they paid $471 billion.
But what's most interesting about Hillary's remark is it ignores the actual responsibility that she and her husband, former President Bill Clinton, bear for creating the financial crisis. It's hypocrisy that the Clinton Democrats, who created the housing bubble in the 1990s and 2000s with their policies, now have spun a false tale of Wall Street greed, crazy deregulation, and tax cuts as the causes of the crisis.
Here's the real story, in brief: In 1995, using the powers of the presidency, Bill Clinton turned the 1977 Community Reinvestment Act into an aggressive program that basically forced banks to lend money to "underserved" communities. That meant those with low incomes who couldn't necessarily repay a loan.