“After a rocky launch as Donald Trump’s running mate, Ohio Sen. JD Vance is settling into his campaign role — as an attack dog focused on issues that Trump’s own advisers wish the former president would talk about more,” Axios reports. “While Trump’s annoyance at Vice President Kamala Harris’ rise in the polls has been clear in the insults he’s lobbed at Harris, Vance has been deployed to swing states to launch a disciplined assault on Harris’ team on issues such as border security, immigration, crime and inflation.”