They would not have to have US Vehicle inspections, to check the brakes, tires, headlights, taillights ...
You must have missed this post:
Let’s speak from facts not emotion or hyperbole:
“While seizing commercial opportunities is important, doing it safely is vital. That is why I traveled to Monterrey, Mexico, yesterday to announce that U.S. inspectors will conduct in-person safety audits to make sure that participating Mexican companies meet every United States safety regulation on the books.
The inspection program is tough, and it is meant to ensure safe operation of trucks crossing our border. Drivers must have a valid commercial driver’s license, carry proof that they are medically fit, and comply with United States hours-of-service rules. And they must be able to understand and respond in English to questions and directions from inspectors.
The trucks must be insured by a U.S.-licensed firm. And from hood to tail-lamps, they must meet United States safety standards, including brakes, turn signals, and cargo-securing equipment.
Companies that satisfy these safety standards and are accepted into the demonstration program will be allowed to operate beyond the border areas to make international deliveries and pick-ups only. Mexican trucks will not be able to pick up goods in one U.S. city for delivery to another. And no trucks hauling hazardous materials or buses carrying passengers will be involved.”
Cross Border Truck Safety Inspection Program