24 JANUARY 2020 - POLK CITY, IOWA: JOE WALSH, center, listens to a program about regenerative agriculture on a farm in Polk City, northwest of Des Moines. Walsh, a conservative radio personality, former Republican congressman, and one time supporter of Donald Trump is now challenging Trump for the Republican nomination for the US Presidency. During his appearance in Polk City, Walsh said Trump is unfit to be the President because he is a "cheater," a climate change denier, and a "threat" to the United States. PHOTO BY JACK KURTZ