President Biden is backing a Colorado Supreme Court ruling, which sees Donald Trump struck off the state's ballot papers.
Colorado's highest court voted the former president, ineligible in the upcoming primary elections, for his involvement in the January 6 Capitol insurrection almost two years ago.
Newstalk ZB US Correspondent Richard Arnold told Tim Dower that it's uncommon for Biden to even mention the name of his potential rival.
LISTEN ABOVE

Kate Acland: Beef + Lamb NZ Chair on the research finding incentives could help farmers reduce emissions
02:34

Ryan Bridge: The AI takeover isn't coming, it's here
02:13

Alan McDonald: Employers and Manufacturers' Association Head of Advocacy and Strategy on the 13% increase in job ads
03:46