An El Toro Mexican restaurant billboard in the 16200 block of Interstate 10 along the eastbound frontage road is shown Sept. 23, 2020, in Channelview. The Texas Department of Transportation, which holds the rights to the anti-litter slogan "Don’t Mess With Texas" is challenging the Baytown restaurant group’s attempt to trademark “Don’t Mess With Tex-Mex” claiming it is too similar and trashes their brand.