There is a budget, even if not a regular budget. It is instead constructed through continuing and supplemental resolutions and various one of authorizations.
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If there is no budget that has been passed, the stimulus bill of 2009 is implemented each year. How big was the stimulus?
https://en.wikipedia.org/wiki/American_Recovery_and_Reinvestment_Act_of_2009
The approximate cost of the economic stimulus package was estimated to be $787 billion at the time of passage, later revised to $831 billion between 2009 and 2019
another link
The Stimulus Plan: A Detailed List of Spending
https://www.propublica.org/special/the-stimulus-plan-a-detailed-list-of-spending
My point is that there is no audit trail of funds spent, as there is with a regular budget passed.
What has been passed is a mammoth bucket of money, distributed at will, and without accountability.
Congress holds no audit hearings now, IIRC.