evidence: The Thursday news conference would be his first public appearance since Vice President Kamala Harris became the Democratic presidential nominee and selected Minnesota Gov. Tim Walz as her running mate. [...] Trump’s running mate JD Vance has criticized Harris for not conducting news conference or sitting down for interviews since President Joe Biden stepped aside and she launched her presidential bid. Harris sometimes answers shouted questions while boarding or leaving her plane for campaign stops. [...] Vance used the stunt to jab Harris for not having conducted an extended interview or full press conference since she began her campaign July 21 after President Joe Biden ended his reelection bid.