The "quiet part" is the US' long history of using ID requirements and other tactics to suppress and disenfranchise black and other minority voting[0,1], especially in the South, for example in North Carolina[1] and Texas[2], going all the way back to poll taxes[3].

If considered in a vacuum, completely absent the context of historical precedent, voter IDs seem like a simple common sense solution to the (practically nonexistent) problem of voter fraud. Unfortunately, we are talking about the US, and it's simply not possible to assume good faith.

[0]https://time.com/5855885/voter-registration-history-race/

[1]https://www.brennancenter.org/our-work/research-reports/new-...

[2]https://www.npr.org/2021/09/17/1038354159/n-c-judges-strike-...

[3]https://en.wikipedia.org/wiki/Poll_taxes_in_the_United_State...

[4]https://www.cnn.com/2021/09/22/politics/ted-cruz-texas-voter...