https://en.wikipedia.org/wiki/False_or_misleading_statements_by_Donald_Trump#Bullshit

According to Harry Frankfurt's influential 2005 book On Bullshit, the liar cares about the truth and attempts to hide it, while the bullshitter does not care whether what they say is true or false. Eduardo Porter writes in The Washington Post that Frankfurt's bullshitter definition fits Trump: "To subvert the truth, you must first know it, or at least think you do. That’s not Trump’s game."

For example, Trump does not, in Porter's argument, have to check US unemployment or inflation statistics to assert that "we inherited from the last administration an economic catastrophe and an inflation nightmare", because for bullshit, the facts do not matter. On the contrary, by ignoring the facts, bullshit has the power to guide group beliefs in a politically desirable direction and thereby to shape group identities. As early as 2015, Jeet Heer wrote that Trump’s propensity to bullshit is not an aberration in his party: "Over the last two decades, the GOP as a party has increasingly adopted positions that are not just politically extreme but also in defiance of facts and science".