Democratic presidential candidate Joe Biden said US President Donald Trump was «concerned» about his nomination because he would «beat him like a drum» at a rally in Waterloo on Saturday.
«I wonder why they don't want me to be the nominee,» asked Biden rhetorically.
Trump suspended military aid to Ukraine as part of alleged attempt to launch a corruption investigation into Biden's son Hunter... Еще.
The former vice president then went on to list perceived failures of the Trump presidency, including whipping up hysteria over immigration from the south, embracing of white supremacy and bowing down to Russian President Vladimir Putin.
«The character of the nation is on the ballot,» he reminded voters.
Biden is currently sitting behind rival Bernie Sanders in polls ahead of the Iowa caucus, the opening salvo of the US primary season.