As an American it is so weird that a country would require you to register with the police at all, no matter your length of stay.
I suppose it's cultural differences. There's a staunchly individualistic attitude in the US and the idea of a central government tracking its citizens is very unpopular. I get it, too. If you take a look at the "Anmeldung" process in Germany, where the government has a list of everyone and their race/religion/nationality, along with exactly where they live/which building/which floor/which side of the building, you can see how such a system could be dangerous if Germany were to ever shift from the liberal democracy it is today.
The American model is highly distributed and need-to-know. Many government forms ask for your current address, but it is not automatically shared with the police and there is no requirement to update it in a timely manner.
Many Americans are highly skeptical of the police, and for good reason. Expecting people to go to the police to register when moving would be a complete non-starter in most neighborhoods that I have lived.
Disclaimer: I'm not complaining about how it is in Germany/other countries in Europe. The trust in government is quite high here, and for a good reason :)
First we have a system of primary elections, and in many jurisdictions your party registration status determines which primary you can vote in. You have to be registered Democrat to vote Democrat, registered Republican to vote Republican, etc. The local election board is the one who oversees to vote, so they need to know your party registration in order to make sure you get the right ballot and the right ballot information (which is sent by mail beforehand). In many jurisdictions you can also "decline to state" and then in a primary election you have to tell them each time which ballot you want.
Second, it's used in state redistricting. Having this information be public allows auditors to check if redistricting is resulting in gerrymandering.
In other countries parties run their own candidate selections as private business and the state can’t meddle in it, so the state doesn’t have to ask what what your affiliation is.
Everywhere else in the world, if you strongly support a party, you join it, and pay a membership fee, and the party adds you to a register. Then, you can take part in party activities, like internal elections.
In the US, you register as a supporter of a particular party with the state. Then, everyone registered can take part in (some) party activities, like primaries.
It's a weird system, and i don't know how it started, but because Americans don't realise it's weird, there isn't much written about it!
As it relates to ethnicity, you're right. I can no longer edit my original comment though.
Also, as another child comment said, filling out religion and gender is optional, and no form ever asks for race (at least in Germany and Switzerland I know that for sure).
On the other hand, having better data about citizens makes a lot of things more efficient and fair in government and politics. As I said, I think the US Census is a disaster and always leads to unfair outcomes for minorities and lower class people.
But I agree, it would be better if they woulnd't ask for religion at all.
What are you referring to? We have a every-ten-year census mandate built into our constitution. It’s been an ongoing thing since the 18th century.
The census results are mostly kept private and anonymized, with only aggregate data being shared.
I do agree it would be difficult for the US to shift to such a system given the requirement is constitutional rather than merely a procedure of the civil service.
Also, in the US it is state governments that are the authority for most things pertaining to where people live: property and rental law, identification cards, property taxes, voters registration, etc. Most states do require people to change their voters registration and drivers license when they move between states.
It’s not that strange that you don’t register your address with the federal government, when in fact, the only interaction that many Americans have with the federal government at all is their yearly tax filing.
It's the same in Germany and Switzerland (and I think in a lot of other European countries): You register with your local government when you move, not the federal government.
In Finland it's not really handled by police, usually done with Posti. Other great thing is that it also updates your details to most places...
In Germany, it is required that when you move to a new apartment you walk into the nearest police station or town hall within a few days and fill out a form telling them your new address, who you live with, what their religious affiliations are, etc. You will get in trouble with the police if you do not do this.
In China they take it even further, and even tourist have to do the same. If you stay in an Airbnb in China and do not register with the local police, it is possible you can get in real trouble. This is not “write your hotel’s address on the immigration form”, it is “tell the local cops where to find you.” There is a huge difference in my mind at least.
I'm sure it all goes into the same database.