The definition of "Hispanic" doesn't seem to be well settled yet, but clearly it's not a race or ethnicity in the sense that we conceive of "white" as such.

So we don't do ourselves any favors by trying to do heads-up comparisons between unlike categories.  It's hardly surprising that the Venn diagram of "white" and "Hispanic" would have an obvious overlap.

I wonder how many "white non-Hispanics" would consider "white Hispanics" to be fully white.  I guess that's a question for the next survey.

Now as to a particular political party "artificially partitioning the population into contrived racial and ethnic groups [as] a political tactic designed to divide us"?  Pot, meet kettle.