Whitaker has criticised the probe in the past as too wide-ranging, which has raised concerns among Democrats that Sessions' ouster and Whitaker's appointment might be precursors to Trump moving to end it.
President Donald Trump distanced himself Friday from his new acting attorney general, Matthew Whitaker, whose past business ties and comments on the Russian Federation investigation and other topics have drawn scrutiny.
Beyond Congress, the U.S. public has also expressed deep concern about the chaos within the Department of Justice.
Whitaker himself stayed out of the public debate Friday.
Legal scholars are debating the constitutionality of his appointment, with some lawyers saying it is illegal because he has not been confirmed by the Senate.
The Orlando demonstration was made up of dozens of people and wasn't limited to Democrats, with Republican voters also on the scene, said Derek Bryan, 35 of Oviedo, one of the protesters.
In an appearance on Fox & Friends from October 11, Trump spoke fondly of Whitaker when asked if he was being considered to replace Sessions. "I think we can all agree that (Deputy Attorney General) Rod Rosenstein was a firewall for the (Robert) Mueller investigation".
"He's a highly respected man, especially by law enforcement, and I think he's going to do a great job", Trump said.
Apple cancels production boost for iPhone XR
Apple is also said to have revised planned units for older iPhone models for this quarter from 20 million to 25 million. Last week, Apple did warn that sales for this holiday quarter are likely to miss the expectations of Wall Street.
"Therefore, Whitaker can not serve as acting Attorney General".
However, Sessions' new guidelines would place more of a burden onto state attorneys general and other local agencies attempting to make these deals.
"He was very, very highly thought of, and still is highly thought of, but this only comes up because anybody that works for me, they do a number on them", Trump said.
Democratic Senator Richard Blumenthal told Reuters late on Friday he was "considering action that might be brought against an interim appointment that violates the normal statutory line of succession and raises very serious constitutional questions".
"The president has said repeatedly he's not going to dismiss the Mueller investigation", McConnell told reporters at Kentucky's Capitol.
He said he was speaking only for himself and he hoped Republicans might join as plaintiffs if a lawsuit goes forward. "That also happens to be my view".
"This is a man who should have recused himself", said Gerald Harris, a retired judge who participated in the protest in NY.
Former New Jersey Gov. Chris Christie is said to be a candidate, along with Labor Secretary Alex Acosta and Health and Human Services Secretary Alex Azar, among others.