Conservative radio show host and former lawmaker Joe Walsh has become the second man to challenge President Donald Trump for the Republican Party’s 2020 White House nomination.
“The country is sick of this guy’s tantrum [sic] – he’s a child,” Mr Walsh, 57, told ABC’s This Week, in what is seen as a long-shot challenge.
President Trump made no immediate public comment on the news.
Former Massachusetts Governor Bill Weld announced his challenge in April.
Both men now face an uphill battle to take over a Republican Party that has been refashioned in Mr Trump’s image.
No sitting president in the modern era has lost the race to be nominee for their own party.
But both Jimmy Carter in 1980 and George Bush Snr in 1992 faced strong challenges that foreshadowed difficult presidential elections they would lose.
