Sean Duffy sounds off on DOT's illegal immigrant trucker crackdown, friendship with Charlie Kirk, at AmericaFest Transportation Secretary Sean Duffy spoke to Fox News Digital about his special friendship with Charlie Kirk as well as USDOT's ongoing crackdown on illegal immigrants with non-domiciled CDL licenses — and gave an update on holiday travel stats. NEW You can now listen to Fox News articles! Republicans in Pennsylvania are pressuring Democrats to act on a legislative crackdown