Yes.
What are your views on the former Mexican governance over territories presently constituting the south-western United States?
I don't begrudge Mexicans flying Mexican flags. I spent time in childhood in Wisconsin with Swedes flying Swedish flags, Germans flying German flags, Norwegians flying Norwegian flags, Swiss flying Swiss flags, etc. The vast majority of the descendants of former Mexican citizens in Texas and New Mexico and California who stayed in our country after the 1848 war of course don't have much of an allegiance to Mexico. That is mostly something among the new immigrants.
Of course, you need to remember that it was the Mexicans who started the Mexican-American wars, first through their assault on the Texans, then by declaring war on America over the resulting Texas border dispute, which is why we ended up annexing their territory as reparation for their agression. I don't believe the Goans declared war on India in 1961.