Comey's announcement had improperly usurped the Justice Department's authority over the matter, Rosenstein said.
Sanders reasoned that Trump fired Comey now - and not when he took office in January - because he wanted to give Comey a chance. Before any nominee is confirmed, the White House must forswear any interference in the FBI investigation and promise to provide it with all needed resources.
Trump described his talks with Lavrov as "very, very good".
A reporter asked Mr Trump if Comey's dismissal affected his meeting with Russian Federation? The current House and Senate investigations of Russian Federation have produced some valuable testimony, but many lawmakers have proved themselves incapable of separating politics from the important work their committees are supposed to be conducting.
Under a law passed after the Watergate scandal that led to President Richard Nixon's resignation in 1974, special prosecutors can be named to handle politically sensitive investigations and shield them from Washington's partisan fray. Some Democrats have expressed concern that the firing is related to the FBI's investigation into alleged ties between the Trump campaign and the Russian government.
Democrats are escalating their calls for the appointment of a special prosecutor to conduct an independent investigation to dispel any impression of a cover-up. The President fired then national security adviser Michael Flynn for misrepresenting conversations he had with Kislyak after Trump won the 2016 presidential election. The Senate judiciary committee is also actively probing the allegations. Yates was sacked by Trump in January for refusing to enforce an executive order on immigration and refugees, which eventually was blocked by U.S. courts. "We are determined to make sure that we as a Congress figure out what does Donald Trump know and when did he know it", Jeffries said. A Justice Department spokesperson denied the report.
"Now our dialogue is free of the ideologisation that was characteristic of the Obama administration", Lavrov said.
"The President of the United States is a unsafe con artist", Jeffries claimed.
United States intelligence agencies concluded in a January report that Putin had ordered an effort to disrupt the 2016 election that included hacking into Democratic Party emails and leaking them, with the aim of helping Trump.
Rosenstein's letter lists a string of failings in Comey's handling of the final stages of a drawn-out probe into Clinton's use of a private email server as secretary of state - which the Democrat says cost her the presidency.