The policies may be written to cover families and corporations.
Now, the program covers only families earning less than $40,000, as well as senior citizens and disabled individuals.
The housing law would also be broadened to cover the disabled and families with children.
The fund covers families of those who died, and anyone physically injured by the attacks.
Medicaid, originally intended for the poor, has been expanded in some states to cover families with incomes up to twice the poverty level.
The plan did not define "middle class," but toward the end of the campaign, aides said it covered families with incomes below about $80,000.
The law would also, for the first time, cover handicapped people and families with children.
One definition of upper income covers families that earn more than $100,000 a year.
Mr. Bush's health care plan includes several creative proposals to cover poor families and make the system more efficient.
It would have covered families that had never been on welfare - and were in no danger of needing it.