CNN will not run two Donald Trump campaign ads because they make “demonstrably false” claims while discussing impeachment, the television channel said on Thursday.
The network added that the adverts disparage its journalists and push unsubstantiated allegations of corruption against former vice president Joe Biden.
CNN’s decisions come as the Trump administration has escalated its attacks on congressional Democrats' impeachment efforts and continued to lash out at media organisations it tries to discredit as "fake news."
The 30-second commercial claims that Mr Biden promised Ukraine $1bn (£810m) to fire a prosecutor looking into "his son's company."
The ad goes on to criticise another common Trump target, accusing "media lap dogs" of aiding Democrats' impeachment efforts. It depicts prominent journalists bashed by Mr Trump: CNN hosts Don Lemon and Chris Cuomo, White House correspondent Jim Acosta and MSNBC host Rachel Maddow.
CNN said in a statement that "in addition to disparaging CNN and its journalists, the ad makes assertions that have been proven demonstrably false by various news outlets, including CNN."