Here is a comprehensive analysis of the US National Debt updated until **June 2025**, focusing on the causes, challenges, and economic impacts:

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### 1. **Key Figures (Currently):**

- **Total Federal Debt**: **~$36.5 trillion** (≈ 124% of GDP).

- **Debt per Individual**: ≈ **$110,000 per American citizen**.

- **Annual Debt Service**: ≈ **$890 billion** (greater than combined defense + education budgets).

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### 2. **Structural Causes of Increase:**

- **Chronic Deficit**:

- **2024 Budget Deficit**: $1.7 trillion (6.2% of GDP).

- Main reasons: Rising spending on **healthcare (Medicare/Medicaid)**, **social security**, and **interest on the debt itself**.

- **Tax Policies**:

- Tax cuts (like the 2017 law) reduced revenues despite economic growth.

- **Emergency Shocks**:

- COVID-19 pandemic (stimulus packages ≈ $5 trillion).

- Inflation-fighting policies (2022-2024).

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### 3. **Serious Economic Impacts:**

- **Rising Borrowing Costs**:

- Average yield on 10-year Treasury bonds: **≈4.3%** (compared to 1.5% in 2020).

- The government spends **17% of its tax revenues** just on debt service!

- **Weakened ability to respond to crises**:

- Limited space for new stimulus programs in case of recession.

- **Pressure on the dollar**:

- Risks of depreciation in global reserves.