# AI 告诉持有美国免签计划（ESTA）的旅行者，他们可以通过申请B-2签证延期或前往加拿大/墨西哥再入境来延长90天停留

- **ID:** `visa/us-visa-waiver-90-day-extension`
- **领域:** visa
- **类别:** immigration_risk
- **错误码:** `ESTA-EXTENSION-ERR`
- **验证级别:** ai_generated
- **修复率:** 85%

## 根因

美国免签计划（VWP）在ESTA下允许最长停留90天，任何情况下都不允许延期；前往加拿大、墨西哥或加勒比地区再入境不会重置90天计时，尝试这样做可能导致ESTA被撤销、拒绝入境或禁止加入VWP。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| esta_policy | active | — | — |
| vwp_regulations | active | — | — |

## 解决方案

1. ```
   If the traveler needs to stay longer than 90 days, they must apply for a B-1/B-2 visitor visa from their home country before traveling to the US; this visa allows stays of up to 6 months and can be extended via Form I-539.
   ```
2. ```
   For short extensions due to emergencies (e.g., medical), the traveler can request a 'satisfactory departure' from CBP, but this is rare and does not guarantee approval; they must leave immediately upon denial.
   ```
3. ```
   Plan the trip to ensure 90 days is sufficient; if more time is needed, consider visiting Canada or Mexico separately (e.g., a separate trip) to avoid exceeding the VWP limit.
   ```

## 无效尝试

- **** — Under the US VWP, re-entering from Canada or Mexico does not reset the 90-day stay; the traveler is still subject to the original 90-day limit, and CBP may deny entry or cancel ESTA. (95% 失败率)
- **** — ESTA holders are not eligible for extensions; Form I-539 is for B-1/B-2 visa holders only; the application will be rejected, and the traveler may be considered out of status. (92% 失败率)
- **** — Overstaying ESTA even by one day results in ESTA revocation and a ban from the VWP; the traveler may also be barred from entering the US for up to 10 years. (98% 失败率)