Earlier quoted context omitted.
In the US that would require a constitutional amendment to alter the First Amendment. The chances of that happening are infinitesimally small compared to companies being shamed into doing that "right thing" through public pressure.
Until quite recently the FCC had a "fairness doctrine" requiring broadcasters to treat politics evenhandedly. That seems far harder to reconcile with the First Amendment than a "no faked propaganda videos" rule. The Supreme Court explicitly said it was OK. The US has truth-in-advertising laws, which forbid advertisers to make certain kinds of deceptive claims. I'm not sure whether the Supreme Court has explicitly con…
Political propaganda on the other hand is entirely protected by the first amendment. The term propaganda covers nearly all forms of political speech.