Sure, it's almost everywhere.
For example, I recently voted in the 2016 presidential election. I voted in San Francisco. I didn't have to provide ID. I was allowed to vote despite claiming not to remember my own address. (Which I didn't, because I hadn't lived there for a few years. Voting continuously is certainly not a requirement.)
The normal procedure is that you go to the polling place, they ask you to point yourself out on their list of registered voters, and then you vote without authenticating your identity in any way.
Is this detailed/concrete enough for you?
I assume we don't want to keep track of who voted for whom (secret ballot).
President Obama was right when he said the fix to problems in our democracy is more voter participation. Imagine if close to 100% of those eligible to vote, registered and voted. Voter fraud would be insignificant.
"Under non-strict requirements, a voter who does not have the necessary identification may still vote without casting a provisional ballot.[1]"
In what place in the US can you vote without ID? Where? Point it out to me. You can't.
To vote, you already have an ID. It's called a Voter Registration Card. To get one, you generally have to cough up a bill, lease, etc. originally and then vote continuously over the years.
At this point, relative to "voting fraud" (the only thing "ID" will solve), you have:
1) No evidence of significant voting fraud anywhere (we lose more ballots to mismarking)
2) Significant evidence of partisan disfranchisement
3) Leaders having been caught ON AIR saying that disfranchisement was the whole purpose
Do you need someone to run up, kick you in the nuts, and yell "IT'S ABOUT DISFRANCHISEMENT" 3 inches from your ear before you get the message?
Now, if you want to talk about election fraud where the counting of the ballots is suspicious, we can chat.