I am Mexican and Native American, born in the US, as were my parents.
Let me tell you, neither side truly cares what ethnicity you are. They are willing to accept you or marginalize you on ideology and buzzwords alone. Being Mexican is just the icing on the cake.
I've argued with both sides and they are willing to absorb you into whatever group they are against just to strap all the baggage and hatred they have for that group onto you. I cannot even begin to count how many times I've been called "white" or "whitewashed" because of my beliefs on gender, political correctness, gun rights, and antifa.
Conversely I have argued with people that lean right and have been called a spic, and wetback over my stances I take on abortion, welfare + disability, same-sex marriage, and marijuana legalization.
So if I went by what either side says I am, I'm somewhere between being so white I think mayonnaise is spicy and so brown that I must have hopped the border yesterday.
Its ultimately not worth getting involved with a party. You'd have to be an absolute lemming to ride-or-die a political party here in the US. Weigh every decision and choose the lesser of two evils every time.
The best advice has already been given here; if you want to be political, make decisions on your own and remain a free-agent. But it's just not worth caring about.
