Objecting to immigration over concerns about jobs is not intrinsically xenophobic: wanting to build massive walls, banning all Muslims and similar measures, is. That there are sympathetic arguments for specific low immigration policies doesn't change that large amounts of the anti-immigrant attitude are coming from xenophobia.
As for discrimination, you playing language games rather than ignoring the fundamental point: if you prefer, simply add the words "based on race or religion" after the word discriminate and you get the point.
All the terms we use "conservative" "liberal" "progressive" really stand more for complicated political alliances than anything that clear cut. For example, pot legalization is stronger on the left among "progressives" but legalization is essentially reactionary, going back to an earlier era. Similarly, many right-wing, conservative positions, are new or novel ideas. By and large anti-immigrant, xenophobic ideas are more often found as part of the "conservative" tribe (although there's a definite undercurrent of them in the left also, as seen in for example Bernie Sanders strong dislike of open immigration).
In general, almost everything involved in politics is more about allegiances than coherent philosophical approaches. There's no coherent philosophy that should connect attitude about tax policy to attitude about gay marriage. And in so far as there are attempts at coherent philosophical approaches, they often make very little sense: for example the pro-choice movement's language about freedom and autonomy is very similar to language used by people with strong attitudes about the second amendment or believing they have a right to discriminate, but they are from opposite ends of the political spectrum.
The panel seemed to say it found the equivalent of a smoking gun. “Before enacting that law, the legislature requested data on the use, by race, of a number of voting practices,” Motz wrote. “Upon receipt of the race data, the General Assembly enacted legislation that restricted voting and registration in five different ways, all of which disproportionately affected African Americans.”
So, yes, please go explain how these laws are about protecting vote integrity. And then.explain why if they care so much about vote integrity they don't do anything about absentee ballot voter fraud which is a much more common and well-documented problem.
If you're not careful, you're going to catch something.