WASHINGTON - (AP) - President Barack Obama has signed the $938billion health care overhaul that guarantees coverage for 32million uninsured Americans and represents the biggestaccomplishment of his presidency. The new law will be the main issue in this fall's midtermelections. Obama signed the bill at an elaborate ceremony Tuesdayin the East Room of the White House, to be followed by an evenlarger celebration at an Interior Department auditorium. Speaking to a large group of lawmakers before signing the healthcare bill at the White House Tuesday, the president paid tribute towhat he called the "historic leadership and uncommon courage" ofthe members of Congress who pushed ahead with the measure amid theoften heated debate.

Obama is setting out on the road later this week to try tominimize the political damage to lawmakers over the health carebill by convincing the American people of its merits.