House Republicans took a key step on Thursday toward holding Mark Zwonitzer, the ghostwriter of President Joe Biden‘s memoir, in contempt of Congress.

The House Judiciary Committee voted on party lines to advance a contempt resolution for Zwonitzer to the full House for a vote. All committee Democrats opposed the measure.

If the full House were to pass the resolution, Zwonitzer would be referred to the Department of Justice for prosecution for refusing to comply with a congressional subpoena.

The House had asked through the subpoena in February for Zwonitzer, who helped write Biden’s 2017 memoir Promise Me, Dad, to provide records related to his work on the book.

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The request came after former special counsel Robert Hur revealed in his report this year that Biden had disclosed classified information to Zwonitzer.

An attorney for Zwonitzer did not respond to a request for comment.

This story is developing.