What role does Congress play in spending money?

In America, the bills of appropriation are assigned to specific government agencies together with programming agencies. This, therefore, makes it easier when making funding operations to a different level of government branches. The appropriation is usually done every year with enough funding that caters for the entire fiscal year.

During this fiscal year, the bill appropriations are under the control of the government through the national committees that run it regularly to ensure its tasks are enhanced.

Article 1 Section 9 Clause 7

Expenditures-Any money spent has to be voted on; is a budget