Two Democratic senators are asking the Obama administration to review Mike Flynn’s security clearance, saying Donald Trump’s pick for national security adviser “reportedly has a record of mishandling classified intelligence.”

Flynn, who as a Trump surrogate during the campaign led the charge against Hillary Clinton over her private email server, would be privy to some of the nation’s most heavily guarded secrets as the top security adviser to the president.

But Sens. Richard Blumenthal of Connecticut and Jeanne Shaheen of New Hampshire are asking the current administration to look into Flynn’s record of safeguarding secrets during his career in the Army, which culminated in him leading the Defense Intelligence Agency.

The senators released a letter on Wednesday sent last week to Director of National Intelligence James Clapper, FBI Director James Comey and the acting director of the Office of Personnel Management, Beth Cobert.