If they revoke Helen's pass, she becomes another victim and the leftist intelligentsia media will pile on. No, they should let that hideous old bat come to the White House--it's not worth the negative press.
Ari just needs to get better at completely ignoring her: "Oh, I'm sorry, we're out of time! No more questions. Oh, I'm sorry Helen--you interrupted the gentleman behind you. Oops, we really need to get to these other reporters' questions, Helen!!! Sorry we don't have time--have a good day!"
I agree. Also, if she were put out to pasture, her comrades would just stick someone else in there to deliver a similar performance. One way or another, the leftist media is determined to make every press conference an embarassment.