The White House is preparing talking points designed to undermine Deputy Attorney General Rod Rosenstein’s credibility, according to sources familiar with the plan.

The plan calls on President Donald Trump’s allies to cast Rosenstein as too conflicted to fairly oversee the Russia investigation.

The talking points are still in their preliminary form, and not yet finalized, people familiar with their preparation said. The White House and the Justice Department declined to comment.

Already, a number of Trump’s associates have called for Rosenstein’s firing in appearances on television and in public remarks over the past few days, but not all of them did so at the request of the White House.