Democratic Sen. Dianne Feinstein of California doubled down on her call for heavier gun control Tuesday, lamenting that gun rights zealots wait to buttonhole her at her hair salon.

Feinstein said a background check law, of the variety that congress failed to pass earlier this year, would have flagged Aaron Alexis, the gunman who shot and killed 12 people at Navy Yard on Monday morning, and prevented him from purchasing the weapon he used.

Feinstein is a vocal gun control advocate, who issued a new call for gun control legislation after the shooting Monday. The debate had been largely dormant after a compromise amendment failed to pass the Senate in April.