“If you’re not allowed legally to disparage the president or his family or anything they have to do with, any company they have or asset they have, why can we believe anything you say?”

That was the incisive question MSNBC anchor Katy Tur asked former Trump campaign spokesman Marc Lotter on Wednesday, referring to the blanket non-disclosure agreement all Trump campaign and West Wing staffers are reportedly required to sign.

Leaked versions of that document contain a non-disparagement clause in which the signee agrees not to “demean or disparage publicly” President Trump, his family, their company, or any of the family’s assets.

As Tur suggested, that obligation diminishes the value in having ex-Trump staffers provide commentary for cable-news programs. After all, they are contractually bound to say nothing remotely negative about Trump or his family, even if they wanted to.