During ABC News’ key presidential debate on Tuesday night, Vice President Kamala Harris criticized former President Donald Trump for his involvement in Project 2025, a 922-page playbook of controversial policy proposals produced by the Heritage Foundation to guide the next conservative administration.

Trump has denied involvement in Project 2025, saying he had “nothing to do with it” and has not read it, despite the playbook being written by dozens of former members of his administration, including former Cabinet secretaries and West Wing aides. At a Heritage event in April 2022, Trump said, “This is a tremendous group, and they’re going to lay the groundwork and make detailed plans for exactly what our movement will do … when the American people give us a colossal mandate to save America.”

In the debate, Trump said, “I have nothing to do with it, because she knows better than anyone that I have nothing to do with Project 2025. That’s there. I haven’t read it. I don’t want to read it on purpose. I’m not going to read it,” he said.

He attributed Project 2025 to a “group of people coming together.”

“They came up with some ideas, I guess, some good, some bad,” he said. “But that doesn’t matter. I have nothing to do. Everyone knows I’m an open book.”

Tying Trump to Project 2025 is a key part of Harris’ campaign strategy, and she’s done so a few times during this debate. Polls have consistently shown the plan and its proposals to be deeply unpopular, so it’s no surprise that Trump is once again rejecting it.