Per the WaPo’s live coverage:

Meghan McCain, in an emotional and deeply personal eulogy of her father, took a tacit swipe at President Trump several times during her remarks.

But the most pointed was when she said, “The America of John McCain has no need to be made great again, because America was always great” — a reference to Trump’s campaign slogan. Rare for such a solemn gathering, applause rippled through the cathedral for several long seconds, passing over an audience which included Trump’s daughter Ivanka and son-in-law, Jared Kushner, who sat stone-faced.