I'm not sure that is true. Pelosi and the Dems need to show a willingness to negotiate at least. I think for the most part they have handled it right. So far. But it will be a pox on both houses if this goes on too long.
I don't think I buy that. There really isn't anything to negotiate. Trump wants the wall, the Democrats fairly reasonably don't want it. There is no meet half way approach to this and they've tried being reasonable and reaching out before without gaining anything by it, This time they should stand their ground until Trump makes some meaningful concessions.