According to wikipedia, "the theoretical risk of a coincidental match is 1 in 100 billion (100,000,000,000) although the practical risk is actually 1 in 1,000 because monozygotic twins are 0.2% of the human population", so it looks like some twins will cause an issue for DNA-based convictions, but I think a non-twin sibling is probably diverse enough? I have different eye colour, ears, food intolerances to my brothers, so I feel like our DNA is pretty different ("pretty" on a scale of human to human comparisons, since 99.9% of DNA is identical between humans or something like that).

I'd argue that while a DNA match could be a very good starting point for a conviction, other evidence should also be presented, for the reasons you suggest. For example, there is the case of the Phantom of Heillbron (https://en.wikipedia.org/wiki/Phantom_of_Heilbronn), where European police found DNA evidence of a woman being at many diverse crime scenes, but it turned out the cotton swabs used for testing were contaminated by at worker at the factory (The swabs weren't certified for police work)

Remember that one still needs proof. My DNA on a victim's clothes does not mean I committed the crime.

It's generally quite hard to get a DNA sample from someone's PGP signature

Do what, fingerprinting or collecting DNA? Not sure what you're trying to say, if Europe does it, it's fine?

The gist is that this was always done when people were arrested for criminal offences. They're now doing it for civil offences and, like with all the ICE stuff, it seems to be do first, ask questions later. So you can be a citizen but your data might end up in their systems anyway as it's submitted before they find out you are a citizen...

Slightly biased because I'm a european, but I think a european country is more likely to be trust-able with a country-wide DNA database. Only slightly more though, I still wouldn't trust them to actually do it right

Interested in this as I haven't heard of this from an all population point of view, do you know which European countries this is? I know many have a national DNA database but that is limited to those charged with crimes (or suspected of in some cases, in some countries these are removed later).

The babies, obviously.

Like Susan Collins, I shall furrow my brow to indicate my unease with the situation.

Kidding, sort of, if brownshirts and other government-sanctioned thugs show up in November, I'm really not sure what I'll do. They're already making noise about doing extra "Watching" of elections in my area (Fairfax County) and as far as I can tell, the only criteria for that is "they vote blue, so it must be fraud!"