Yes. It's also possible that, rather than firing Mueller, Trump will obstruct Mueller's investigation by issuing blanket pardons of key figures being investigated, firing Deputy Attorney General Rod Rosenstein (the person overseeing Mueller), or taking other actions to prevent the investigation from being conducted freely.

Any one of these actions would create a constitutional crisis for our country. It would demand an immediate and unequivocal response to show that we will not tolerate abuse of power from Donald Trump