[POLITICS]: Shibboleths?

Can the speaker of the House of Representatives really disinvite the POTUS from the SOTU? Personally, I am in favor of this...

Oh, yeah:

* a peculiarity of pronunciation, behavior, mode of dress, etc., that distinguishes a particular class or set of persons.

* a slogan; catchword.

* a common saying or belief with little current meaning or truth.