Q: Can I travel to Puerto Rico on my OPT and return to the mainland United States without a visa?

A: To answer this question accurately, let's break down the key points:

1. OPT (Optional Practical Training) status

2. Travel to Puerto Rico

3. Return to mainland United States

4. Expired visa stamp

Here's the information you need:

1. Puerto Rico is a U.S. territory, so travel between Puerto Rico and the mainland U.S. is considered domestic travel.

2. As an OPT holder, you can travel to Puerto Rico without needing a visa, just as you can travel between states within the mainland U.S.

3. For returning to the mainland U.S. from Puerto Rico, you do not need a valid visa stamp in your passport. This is because you're not entering the U.S. from a foreign country.

4. You should carry your valid EAD card and a valid form I-20 endorsed for travel within the last 6 months, along with your passport and driver's license.

5. The expired visa stamp in your passport is not an issue for this specific travel, as you're not making an international entry into the U.S.

However, it's important to note that if you were to travel to any foreign country (including your home country) and attempt to re-enter the U.S., you would need a valid visa stamp.

To be extra cautious, you might want to carry a copy of your I-94 record as well, which you can obtain from the CBP website.

If you need more detailed information or have concerns about your specific situation, it would be advisable to consult with the international student office at your school or an immigration attorney.