Kasich or Rubio could potentially do quite well with the Latino vote in 2020.
The problem is that they do not represent the republican base.
Hispanics are extremly assimilated.
I agree with this to a large extent, however Hispanic culture is inherently in favor of larger government. Stick your head in the sand all you want, despite all the rhetoric about Hispanics being "natural conservatives" this is still not compatible with Anglo conservatism, and I will admit the republican base is justified in their concern over what the demographic deluge will mean for the future of american politics, however they are the ones to blame for shooting themselves in the foot thinking this could be reversed.
Personally I never got all the fuss about Hispanics causing problems for Republicans in the long run, prior to Trump formally branding the GOP as anti-Hispanic/immigrant. Immigrants come here and start at the bottom, so of course they support Democrats, but gradually they will assimilate into middle class suburbia as their status grows and thus have the same interest as the GOP's middle class suburban base. There's no reason it had to be any different than the situation with Irish/Italian immigrants, until the Republicans decided to alienate them for the foreseeable future.
This isn't accurate.
People tend to vote same party for life.
No no, George Soros is only a Democrat because he's extremely poor.