President Bush personally asked Senate Majority Leader Tom Daschle ... to limit the congressional investigation into the events of September 11, congressional and White House sources told CNN. The request was made at a private meeting with congressional leaders Tuesday morning. Sources said Bush initiated the conversation. He asked that only the House and Senate intelligence committees look into the potential breakdowns among federal agencies that could have allowed the terrorist attacks to occur, rather than a broader inquiry that some lawmakers have proposed, the sources said. Tuesday's discussion followed a rare call to Daschle from Vice President Dick Cheney last Friday to make the same request. Although the president and vice president told Daschle they were worried a wide-reaching inquiry could distract from the government's war on terrorism, privately Democrats questioned why the White House feared a broader investigation to determine possible culpability. We will take a look at the allocation of resources. Ten thousand federal agents -- where were they? How many assets were used, and what signals were missed?" a Democratic senator told CNN.