Which government agency is responsible for preparing a budget proposal for the preparing a budget proposal for the president to submit to congress?

The Office of Management and Budget (OMB) is the government agency responsible for preparing the budget proposal for the president to submit to Congress. The OMB assists in formulating the budget, ensuring it aligns with the administration's policy priorities, and oversees its execution once approved. Additionally, the OMB plays a key role in coordinating the budgetary process across federal agencies.