While the former Alabama senator was the first to endorse Trump on the 2016 campaign trail, the president quickly turned on Sessions after taking office.
In another appearance the same month, Whitaker suggested that Trump could force Sessions out and replace him with an acting attorney general who would then have the power to hamper the special counsel by cutting the funding for his investigation.
When asked about Sessions's future as attorney general at a wide-ranging press conference held earlier Wednesday, Trump ducked the question and said that, for the most part, he was extremely happy with his cabinet.
Sessions trouble with Trump started after he had recused himself from oversight of the investigation of alleged Russian interference in the 2016 presidential campaign.More news: A Third of People Think the iPad Pro Makes a Great PC
Schumer, of NY, expressed concern over the choice of former southern Iowa federal prosecutor Matt Whitaker as Sessions replacement.
It's unclear what Mueller's fate will be with Whitaker's ascension to acting attorney general.
According to CBS, Whitaker-who previously served as Sessions' chief of staff-will now be in charge of overseeing the Russian Federation probe, which was previously supervised by Deputy Attorney General Rod Rosenstein after Sessions recused himself.More news: Voter turnout is hot a day before Election Day
In an opinion piece written for CNN in August 2017 while serving as a commentator for the network, Mr Whitaker, a former United States attorney, said Mr Mueller would be crossing a line if he investigated the Trump family's finances.
In August of 2017, Whitaker wrote an opinion piece for CNN that was critical of the Mueller investigation. He will serve our Country well ...
With Democrats grabbing control of the House of Representatives, Nadler will become the chairman of the Judiciary Committee - and could preside over impeachment proceedings against Trump. The New York Democrat says it would spark a "constitutional crisis" if Trump forced out Sessions as a "prelude" to ending or limiting Mueller's investigation.
Trump continued his criticism throughout the past year, and in September, appeared to disassociate Sessions from the administration completely, telling Hill.TV in an interview, "I don't have an attorney general".More news: Reimposition of Iran sanctions spells uncertainty for Korean businesses