If Deputy Attorney General Rod Rosenstein is ousted Monday, oversight of the special counsel investigation of Russian activity will most likely fall to Solicitor General Noel J. Francisco.

Francisco, a former partner at the Jones Day law firm in Washington, is the next Senate-confirmed Justice Department official in line to oversee the probe led by Special Counsel Robert S. Muller. However, there is an open question about Francisco’s role in such a situation, because of a possible conflict dating from his time at Jones Day.

Attorney General Jeff Sessions previously recused himself from involvement.

In his current role, Francisco is the top Supreme Court litigator for the Trump administration.

He has strong conservative credentials. He clerked for the late Supreme Court Justice Antonin Scalia, was an associate White House counsel in the George W. Bush administration and also worked in the Justice Department’s Office of Legal Counsel for two years during the Bush administration.