Asked by CNN’s Wolf Blitzer on Wednesday to comment on how the ongoing conflict between Donald Trump and the Khan family—who lost their U.S. Army captain son in Iraq—could be resolved, Trump surrogate and former rival Ben Carson said: “I don’t think it would be harmful if they apologized to him and he apologized to them, but I don’t see that happening.” When Blitzer followed by asking why the Khans owe Trump an apology, the pediatric neurosurgeon replied, “If you accuse someone of something that’s not true, usually it is a reasonable thing to acknowledge that.” The CNN host did not press Carson to explain which statements, if any, from the Khans have been factually incorrect. From the stage of the DNC, Khizr Khan asked Trump if he has read the U.S. Constitution and declared, “You have sacrificed nothing.” Trump later said his business successes count as “sacrifices.”