Or they don't have the time or wherewithal to study for a test for whatever reason. This is the problem with trying to apply a standard to 300 million people - if 0.5% of people are the corner cases, there are 1.5 million corner cases. There are actually 14 million households in the US without internet access.[0]
> I don't see that as 'not letting' them vote. It's more 'if you really care about voting you'll do some basic due diligence first
The fact is that in order to implement this, you would have to turn away people who show up to the polls having fulfilled their end of the social contract (paying taxes, following laws, etc.). You lose the consent of the governed. And even that ignores the question of who would write and grade the test in the first place - the US has a sordid history of literacy tests being used to intentionally exclude certain groups from the franchise, and you'd have to find someone (definitely not Vivek) who could be trusted to do that job. Having the best of intentions doesn't matter when the choice of which questions to include/excluded can swing elections and disenfranchise millions.
[0]https://www.lendingtree.com/home/mortgage/internet-access-st...