A new poll says that Americans, concerned over the future of health care reform and anxious about the growing federal budget deficit, are losing faith in President Barack Obama. The Washington Post-ABC News survey found that less than half of Americans — 49 percent — say they believe the president will make the right decisions for the country. That's down from 60 percent at the 100-day mark of the Obama presidency. The poll published Friday says Obama's overall approval is 57 percent, 12 points lower than it was at its peak in April. Fifty-three percent disapprove of the way he's handling the budget deficit and his approval on health care continues to deteriorate. The national survey was conducted Aug. 13-17 and has a sampling error of plus or minus three percentage points.