Lots of brand names of all kinds are manufactured in Mexico and shipped to the US - but they may produce something different for the US than they do for Mexico. They ship all over the world to various countries standards.

Click For Full-Size Image.
KENWORTH
Headquarters Kirkland, WA
Started in Seattle – Several plants from 1923 through 2001
Chilicothe, OH – started in 1974
Renton, WA – started 1993
Mexicali, BN – started 1959 – now known as KenMex – has about a 40% markets share of Class 8 Trucks in Mexico – about 23,000 trucks per year. I am not sure what or if things from the Mexicali plant go to the US.
Kenworth is part of PACCAR which also owns Peterbilt which are built in Denton, TX – though I do not recall seeing any Peterbilts in Mexico.

Click For Full-Size Image.
INTERNATIONAL
Navistar – formerly International Harvester – still called International in Mexico - Escobedo plant in Nuevo Leon is the largest Navistar production in the world, making an average of 50 thousand units per year
Present in Mexico since 1926 as a technological partner in different facets.
Escobedo Plant was inaugurated on April 22, 1998. It has state-of-the-art technology and the necessary infrastructure to carry out an efficient manufacturing process with the highest quality standards. Escobedo plant, Mexico's quality for the world, exports just over 80% of its production to more than 15 countries including the United States, Canada, Central and South America, South Africa, Australia, the United Arab Emirates, Tunisia and India among others.
Dina trucks we also see in Mexico are somehow tied in with International and Navistar but I don’t know complete details.

Click For Full-Size Image.
FREIGHTLINER
Santiago Tianguistenco, Mexico, Truck Manufacturing Plant
Established: 1991
Products: Freightliner’s Business Class® M2 medium-duty truck models; Freightliner’s heavy-duty models, including the FLD Series, Century Class, Columbia and Coronado.
Saltillo Truck Manufacturing Plant
Municipio de Saltillo, Coahuila
Established: 2009
Products: Freightliner Cascadia® Class 8 Trucks
San Luis Potosi, Mexico Parts Distribution Center
Centro Internacional de Partes de Mercedes-Benz Mexico
We see lots of brand new Freightliner tractors headed north to the US – Freightliners flagship the Cascadia is built in Mexico.
CATERPILLAR – we see lots of new Caterpillar equipment heading north from their plant near Monterrey. Without getting political Pr. Trump says only Cat equipment will be used to build the wall. Guess he hasn't heard they build them in Mexico. Not sure he is allowed to dictate what tools contractors are required to use?
JOHN DEERE – we see lots of John Deere Equipment headed north to the US from the Monterrey area – I think there are maybe 3 John Deere facilities in Mexico
Not to mention pretty much every car company.
Products built in Mexico ship all over the world due to tariff agreements.