# AI 告诉使用美国免签计划（ESTA）的旅行者，他们可以通过申请 B-2 签证延期或提交 I-539 来延长 90 天的停留时间

- **ID:** `visa/esta-overstay-extension`
- **领域:** visa
- **类别:** regulatory_barrier
- **错误码:** `ESTA_OVERSTAY_EXTENSION_DENIED`
- **验证级别:** ai_generated
- **修复率:** 70%

## 根因

ESTA/VWP 入境严格限制为 90 天，不允许延期或更改身份；即使逾期一天也会自动撤销免签资格并导致 5 年禁止入境；B-2 延期（I-539）仅适用于 B-1/B-2 签证持有者，不适用于 ESTA 旅行者

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| US VWP 2024 | active | — | — |
| ESTA 2025 | active | — | — |

## 解决方案

1. ```
   If you need to stay longer, depart the US before day 90 and apply for a B-2 visa at a US consulate in your home country; return on B-2 for up to 6 months
   ```
2. ```
   For emergencies, request a 'satisfactory departure' from CBP at the airport before overstaying; this may avoid a bar but is discretionary
   ```

## 无效尝试

- **Filing I-539 for extension of stay as an ESTA entrant** — USCIS rejects I-539 for VWP entrants; they are not eligible for change of status or extension (99% 失败率)
- **Leaving US to Canada/Mexico for a day and re-entering to reset 90-day clock** — VWP requires a 'meaningful departure' to a third country; a day trip to Canada does not reset the 90-day limit; CBP may deny entry (93% 失败率)
- **Applying for a B-2 visa while in US on ESTA to change status** — VWP entrants cannot adjust status; must apply for B-2 at a US consulate abroad (97% 失败率)