What happens if a visa holder’s passport expires before their visa does?

The visa remains valid, but the traveler must carry both the old passport (with the visa) and the new passport.

Entry to the U.S. will only be allowed if the visa is unexpired and matches the traveler’s identity.

Some airlines or border officials may require at least 6 months of passport validity.

It’s generally advised to renew the passport early to avoid travel complications.