The power to assures Congress a source of power to balance power of the Executive branch, enables Congress to establish executive branch public health agencies, and to allocate public health–specific funds to states and localities.

spend

Explanation:

The executive branch of the state enforces and implements the laws in the state. The congress of the United States is granted with the power to collect the taxes in order to pay the debts used for the common defense and for the welfare of the state under the constitution article 1 section 8.

According to the given situation, the Congress has the power to spend and to maintain the balance of Power of the Executive branch. The executive branch is necessary for the allocation of funds in the public health agencies and to the state localities.