WASHINGTON , The U.S. president,said yesterday that the crisis on the country's debt ceiling was unnecessary negative impact on the economy. He said that a stalemate in Congress on aviation could cost the government billions of dollars in lost revenue. The U.S. president on Tuesday signed the law raising the debt limit and cut spending to avoid a moratorium hours before the deadline. "The economy remains weak, partly due to some things that we could not control, like the earthquake in Japan and the situation in Europe and the Arab spring and its effects on oil prices," Obama told reporters in the House White early yesterday in a meeting with his cabinet. "Unfortunately, the crisis in the debt limit in the last month, I think, has had a negative impact on the economy well," he said. Obama urged lawmakers to settle their differences by the end of the week, which would have to suspend your vacation. The president held a birthday today with a party at the White House and a weekend with family and friends at Camp David, it was reported yesterday. Defense Secretary of the United States, , said cuts 350 billion dollars in defense budgets, under the plan of spending cuts will be made with care and without affecting the "excellence of our military ". In a letter to the Pentagon staff, Panetta acknowledged that it is necessary to cut the military budget to reduce the U.S. debt, the cuts will not be "in a hasty or ill-conceived" and without due consideration, in order not to affect national security. By ensuring that prevent repeat "past mistakes", which weakened the armed forces after the Vietnam War, Panetta said the cuts will be based on an assessment of national priorities and key military missions.