I don't doubt that, but ask those same people how they feel about anti-Hispanics like Buchanan. (remember the meatball commercial?)
Look at the way anti-immigrant posters on FR characterize Hispanics. They are patently racists. An Hispanic can agree that we need tighter enforcement of immigration laws and at the same time be turned off to the Republican Party by the racist anti-Hispanic statements made by so many self-identified Republicans.
So it's not the objections to Bush's policies that you have a problem with, but the manner in which some of these objections are expressed?