Didn't find it, but then this is what he said on Jan 22nd, according to this article: https://archive.is/DyvNG
"Ezra Cohen, another of Miller’s top confidants, believes that his colleagues’ words and deeds may be well and good, but are beside the point: “The president threw us under the bus. And when I say ‘us,’ I don’t mean only us political appointees or only us Republicans. He threw America under the bus. He caused a lot of damage to the fabric of this country. Did he go and storm the Capitol himself? No. But he, I believe, had an opportunity to tamp things down and he chose not to. And that’s really the fatal flaw. I mean, he’s in charge. And when you’re in charge, you’re responsible for what goes wrong.”
Didn't find it, but then this is what he said on Jan 22nd, according to this article: https://archive.is/DyvNG
"Ezra Cohen, another of Miller’s top confidants, believes that his colleagues’ words and deeds may be well and good, but are beside the point: “The president threw us under the bus. And when I say ‘us,’ I don’t mean only us political appointees or only us Republicans. He threw America under the bus. He caused a lot of damage to the fabric of this country. Did he go and storm the Capitol himself? No. But he, I believe, had an opportunity to tamp things down and he chose not to. And that’s really the fatal flaw. I mean, he’s in charge. And when you’re in charge, you’re responsible for what goes wrong.”