U.S. President Donald Trump plans to nominate Jeffrey Rosen as the next deputy U.S. attorney general, the White House said Tuesday night, the latest shuffle in the Justice Department at a time when it faces close scrutiny over its Russia investigation.

Rosen, currently deputy secretary of the U.S. Department of Transportation, would succeed Rod Rosenstein, who appointed a special counsel to investigate possible ties between Russia and President Donald Trump's campaign.

Rosenstein is expected to step down by mid-March, a Justice Department official said on Monday.