Why do deficits persist even during the expansionary phase of the business cycle?

Deficits can persist during the expansionary phase of the business cycle due to several factors, including ongoing high levels of government spending that outpace revenue growth, structural economic issues, and political decisions prioritizing short-term gains over long-term fiscal health. Additionally, tax cuts and increased entitlements can further exacerbate deficits, as governments may continue to borrow to finance these expenditures. Economic expansions can also lead to increased borrowing costs, as demand for credit rises. Ultimately, the combination of these elements can sustain deficits even in periods of economic growth.