President Trump's attorney general pick may have just served Democrats cause for concern.

William Barr faced the Senate Judiciary Committee on Tuesday, hearing from a line of Democrats concerned about the protection of Special Counsel Robert Mueller's investigation. Sen. Dianne Feinstein (D-Calif.) explicitly asked whether Barr has received any "nonpublic information about Mueller's investigation" from the White House. But Barr changed up Feinstein's language in his response, saying "I don't recall getting an confidential information."

FEINSTEIN: "Has anyone given you nonpublic information about Mueller's investigation?"



BARR: "*I don't recall* getting any confidential information." pic.twitter.com/5fVeP5OVN4 — Aaron Rupar (@atrupar) January 15, 2019



Earlier in the hearing, Barr acknowledged discussing Mueller's probe into the Trump campaign's potential involvement with Russian election interference with the president. But he said those discussions were "not in any particular substance."

Democrats are worried that an attorney general might interfere with the special counsel's probe, especially considering Barr once issued a memo criticizing an aspect of Mueller's investigation. Barr did ensure in his opening statement that he'd allow Mueller to "to complete his work" and make any results of the probe public, providing they are "consistent with the law." Kathryn Krawczyk