Democratic senators asked FBI to investigate Jeff Sessions for perjury

Stems from the statements he made about his interactions with Russian officials.

Leahy and Franken wrote that they contacted Comey in a March 20 letter, asking him "to investigate Attorney General Sessions' false testimony and any additional contacts he may have had with Russian officials."

The letter states that they are "concerned by Attorney General Sessions' lack of candor to the committee and his failure thus far to accept responsibility for testimony that could be construed as perjury."

Franken asked Sessions during his confirmation hearing "if there is any evidence that anyone affiliated with the Trump campaign communicated with the Russian government in the course of this campaign."

Sessions said he was "not aware of any of those activities."

He added, "I have been called a surrogate at a time or two in that campaign, and I did not have communications with the Russians, and I'm unable to comment on it."

Sessions subsequently recused himself from any DOJ probes related to the presidential campaigns.