Threadbare. In cities like NYC, it approximates European transport, though is somewhat more dysfunctional. Elsewhere, you have things like “commuter rail” (like a regio/S-bahn, only with next to no off-peak service, running solely as a shuttle between CBDs and dormitory suburbs). There’s Amtrak, but it’s slow and infrequent and runs on tracks owned by freight railroads, and often is delayed by hours from waiting for freight trains to pass. Bus services have a stigma, associating them with poor (and typically non-white) people, to the point where people who have a choice avoid them, and vote to minimise the amount of their tax money that goes to pay for them. And in some Republican states, the government has scrapped even buses, replacing them with Uber vouchers mailed to households.

So yes, DB is creaking and needs investment to bring it up to scratch, but its service levels (even when wracked by delays) are utopian compared to most of the US.