General Welfare Clause
The General Welfare Clause which originated in Article I, Section 8 of the United States Constitution was originally intended to ensure that monies spent by Congress would not go to special interests. In other words, monies could only be spent under Article I, Section 8 if they were intended to benefit all citizens, not just special interest groups.
As stated above the Federal government’s spending will be limited because taxes cannot exceed 10% of GDP and government debt cannot exceed 10% of GDP. Therefore, Congress will not be able to spend more than it takes in. However, as with the original Constitution, limits need to be established on what the government can spend money on.
National defense (including border security)
President, Congress and Federal courts
Welfare, but limited to 5% of tax revenues
Environmental protection of air and water
Road construction (responsibility returned to the states)
Subsidies to businesses or individuals
Wars outside the country unless war is declared by Congress
I am sure that these categories will need to be expanded. Please submit your suggestions!