The Arizona attorney-general has challenged the 1965 Voting Rights Act The Voting Rights Act very simply prohibits states from enacting laws that prevent people from voting based on race. In other words Arizona Republicans want to go back to the pre-Civil Rights movement America. This strategy began with the totally bogus destruction of ACORN and has escalated to this day.
This article by right-wing propagandist Matthew Vadum lays out their deeply racist ideology. But remember it's really about winning. Stopping anyone from voting who disagrees with them. In other words, "winning isn't everything, it's the only thing."
I don't know what's "American" and "UnAmerican" in the 21st century, but I do know the right wing violates any pretensions to democracy Americans seem to hold.
"Registering the Poor to Vote is Un-American" by Matthew Vadum