Attorney General Jeff Sessions is considering naming a special counsel to lead an investigation into a list of matters involving Hillary Clinton, according to a Monday letter the Justice Department sent to the House Judiciary Committee.

President Trump’s top prosecutor is interested in further probing a wide range of topics including the Obama-era Uranium One deal that gave a Russian-owned company partial control of U.S. atomic energy resources.

Officials told The Hill that the Justice Department is also currently investigating several issues related to Clinton Foundation donations, the unmasking of American identities by the intelligence community and former FBI Director James Comey’s handling of the investigation into Clinton’s private email server, all of which could lead to the appointment of a second special prosecutor if the facts warrant.

The letter comes in response to the repeated appeal of Rep. Robert Goodlatte (R-Va.), chairman of the Judiciary panel, who called on Sessions twice this year to appoint a second special counsel who could independently investigate these concerns.