Former U.S. Rep. Liz Cheney blasts fellow Republicans in her new book, accusing them of enabling former President Donald Trump at the expense of the Constitution, CNN reports.

The network obtained a copy of the former Wyoming representative’s forthcoming Oath and Honor: A Memoir and a Warning, in which she writes that Republican leaders are “enablers and collaborators” of Trump.

Cheney, a daughter of former Vice President Dick Cheney, has been one of the Republican party’s most outspoken critics of Trump. She supported the second impeachment of the former president, which led Wyoming’s Republican party to revoke her membership and the Republican National Committee to censure her. In 2022, she lost the Republican primary to retain her seat in Congress.

In the book, Cheney writes, “So strong is the lure of power that men and women who had once seemed reasonable and responsible were suddenly willing to violate their oath to the Constitution out of political expediency and loyalty to Donald Trump.”

Cheney blasts former Speaker of the House Kevin McCarthy in the book, recounting how the California representative visited Trump at his Mar-a-Lago Club three weeks after the Jan. 6 Capitol insurrection. She writes that she asked McCarthy about the visit, to which he replied, “[Trump’s staff are] really worried. Trump’s not eating, so they asked me to come see him.…Yeah, he’s really depressed.”

Oath and Honor is scheduled for publication by Little, Brown on Dec. 5.

Michael Schaub is a contributing writer.