I would spend my money at a different restaurant. . .no big deal.
They would likely boycott the place and see if there was any legal action they could take to prevent such blatant discrimination.
Whining lefties might pursue legal action. Conservatives wouldn't because they know it is a private business and they have the right to choose how to run it.
1. Mexican food in Miami sucks, especially when you can get great Cuban/Colombian/Venezuelan food, to say nothing of the Argentinean steakhouses/Italian joints.
2. I would just take my business elsewhere. No big F'in deal.