John Oliver criticized Donald Trump and J.D. Vance for their attempts to tarnish Minnesota Governor Tim Walz's military record, calling their 'stolen valor' claims 'thin gruel.' Vance accused Walz of lying about his military service for political gain, claiming that Walz suggested he carried a gun in war despite not serving in a combat zone. Vance pointed out that Walz retired from the National Guard just before his unit was notified of deployment to Iraq, implying he did so to pursue a congressional run. However, Walz's former superior officer contradicted Vance's claims, stating that they were aware of the upcoming deployment before Walz's retirement. The controversy raises questions about Vice President Kamala Harris's judgment in selecting Walz as her running mate. Vance emphasized that he is not criticizing Walz's service itself but rather the alleged dishonesty regarding his military record.