There is at least the appearance of bias in these algorithms, with Google being a rather extreme example. It’s not easily explained away by other factors. Study showed a smaller bias towards the right for Yahoo/Outlook.

I wouldn’t be too surprised if a number of Dems support this bill for the same reason.

https://arxiv.org/pdf/2203.16743.pdf

> We further observe that Gmail marks a significantly higher percentage (67.6%) of emails from the right as spam compared to the emails from left (just 8.2%).