https://travel.state.gov/content/travel/en/us-visas/tourism-visit/border-crossing-card.html Border Crossing Card
For Citizens of Mexico
Overview
A Form DSP-150 is both a Border Crossing Card and a B1/B2 visitor visa, but a DSP-150 is generally called a Border Crossing Card (“BCC”). It is issued as a laminated card, which has enhanced graphics and technology, similar to the size of a credit card. It is valid for travel until the expiration date on the front of the card, usually ten years after issuance.