The vice chairman and ranking member of the Senate Appropriations subcommittee on Justice also want to know if there are any "constraints that might limit the FBI in conducting a thorough investigation" into Russia's attempts to influence the 2016 presidential election.

The two senators sent a letter to Deputy Attorney General Rod Rosenstein asking him to hand over any request made by the FBI related to its Russia investigation and potential ties between President Trump's campaign and Moscow.

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"The American people have a right to know, for the sake of our national security and sovereignty, whether and to what extent Russia interfered in the 2016 Presidential election," they wrote in the letter sent Thursday. "The Federal Bureau of Investigation and the Department of Justice should dedicate the needed personnel and resources to the investigation without hesitation."





Comey reportedly requested more money and personnel for the bureau's investigation days before Trump abruptly fired him on Tuesday. The DOJ has denied reports of Comey's request.

The two senators said they were "surprised" by the press reports given that the FBI got a funding increase for salaries during fiscal 2017. But they said they are willing to help the FBI get the funding it needs for the investigation.

"We stand ready to assist should the FBI require additional funding to comprehensively conduct this crucial investigation or to meet any of its core missions," they added.

In addition to any funding request from the FBI, the two senators want Rosenstein to give them details on how Comey made any requests and if he made a similar request to the White House or lawmakers. They also want to know any additional constraints that could limit the FBI's investigation.

In the letter, the senators request a response at least three days in advance of a committee hearing regarding the DOJ's 2018 fiscal year budget.