(1) after having been dropped form all major cable and satellite carriers, coming back since Trump came to power (picked up by Spectrum earlier this year, and given the administration openly favoring them and using licensing pressure to shape carrier decisions, that seems likely to spread) [0], and
(2) under the Trump Administration, the source of news coverage for the literal government media (Voice of America.) [1]
[0] https://www.prnewswire.com/news-releases/herring-networks-an...
[1] https://www.theguardian.com/us-news/2025/may/07/voice-americ...
It wasn’t started by AT&T.
"AT&T has been a crucial source of funds flowing into OAN, providing tens of millions of dollars in revenue," while "ninety percent of OAN’s revenue came from a contract with AT&T-owned television platforms, including satellite broadcaster DirecTV, according to 2020 sworn testimony by an OAN accountant" [1].
That said, there is no evidence this was done "to push propaganda favoring the corporation-friendly tax package in Trump's first term.” Simpler: they chased Fox, Newsmax et al's dollars.
[1] https://www.reuters.com/investigates/special-report/usa-onea...