Driving the news: Twitter, Facebook and YouTube have now drawn red lines around certain kinds of information — in particular, deceptive messages about voting and inaccurate statements about COVID-19 — and started enforcing them, sometimes even against Trump.

Facebook and YouTube removed a video post from Trump’s campaign last Wednesday in which he falsely told Fox News that children are “almost immune” to COVID-19.

Twitter took action against the same Trump video post later on Wednesday evening. It suspended the president’s campaign account (@TeamTrump), which had posted the video, until the campaign took it down.

It’s the first time either platform had taken steps to fully remove a post shared by the president.

Yes, but: So far the action hasn’t prompted a response from Trump — perhaps because the post originated from his campaign account rather than his personal “@realDonaldTrump” handle, which retweeted it.