Why was it difficult for congress to fund its oeration?

Congress faced difficulties in funding its operations primarily due to the lack of a consistent revenue source, leading to reliance on state contributions and voluntary donations. Additionally, political disagreements and conflicts over budget priorities often hindered consensus on funding levels. The absence of a strong federal taxing authority limited Congress's ability to generate necessary funds independently. These challenges were particularly pronounced during times of economic instability or war, which strained resources even further.