Yglesias is not contradicting himself or reversing his position. He's saying the same thing in both tweets: there is no presently available means to readily identify yourself as a citizen if you are stopped by ICE. That is the point of the first tweet and it's the same thing he says in the second
Perfectly fine to say that being "sort of open" to a show-your-id-card regime is dumb, I agree (guy makes a lot of bad tweets). I hope he wouldn't stand by it in a more considered way.
He will probably double down. He's extremely stupid and right-wing (BIRM).
In one, he's saying he's fine with having citizenship papers. In the second, he's saying, "Wait, I don't always have an ID on me!". I think the Yggy Defense Crew is giving him a lot of credit for things he isn't saying because the thought of admitting leftists are right rankles them.
You should read the whole first tweet (and the tweet it quotes), not just the first part of the first sentence in it
I did.