She doesn't exactly have CLEARANCE.
The Big Bang Theory Season 2, Episode 8
Howard, the person at fault for you
not getting a security CLEARANCE is me.
The Big Bang Theory Season 4, Episode 7
That's why I was refused CLEARANCE
for a government research fellowship...
The Big Bang Theory Season 2, Episode 1
He got it at the mall on CLEARANCE.
Move, move, move!
The Big Bang Theory Season 6, Episode 24
...and probably cost Howard
his security CLEARANCE.
The Big Bang Theory Season 4, Episode 7