[Endlessly]

Not sure if you’re asking for:

(1) US coronavirus data in general,

(2) examples of sources that do not log prior days data, or

(3) source that “edit” prior data without noting the edits.

(4) something else

If (1) this page in the table under the column “sources” links to where the data came from:

https://www.worldometers.info/coronavirus/country/us/

[simonw]

2 and 3.