Jessica Tarlov knocked the president for leaning on "one message" during his press briefing on the deadly midair collision.

A midair collision near D.C. has raised concerns over FAA staffing, prompting scrutiny of air traffic control and aviation safety oversight.

The president offered no evidence to support his accusations, striking a partisan note just after calling for national unity and grieving.

The president also blamed the Biden and Obama administrations for the overnight plane crash in Washington, D.C., where there have been no reported survivors.