Due to his strong criticism of Trump and the Republican Party on Last Week Tonight, Oliver and Last Week Tonight have been accused of liberal bias; Zac Davis wrote in America that Oliver "robs his viewers of the opportunity to think, or have any deep understanding of an issue".
Oliver's vocal opposition to Trump and the Republican Party on Last Week Tonight has resulted in allegations of liberal bias against him and the show. According to Zac Davis, writing for America, Oliver deprives his audience of the opportunity to gain a profound comprehension of an issue.