From Reliable Sources with Oliver Darcy on cnn.com:

Donald Trump on Tuesday night made it official, declaring his candidacy for 2024 — forcing news organizations to grapple with how to cover the campaign of a twice-impeached president who incited an attack on the US Capitol after misleading his loyal supporters with disinformation about the American election system.

The big three broadcast networks, to no surprise, ignored Trump and didn’t interrupt normal programming to carry the speech.

But the situation was different on cable. While MSNBC decided not to take the speech live, Fox News and CNN both aired large portions of Trump’s fairly low-energy and misinformation-peppered announcement. Newsmax aired it in full.