A couple good points he makes.
"We are Americans," Mueller wrote. "We must not allow, nor shall we tolerate, the actions of criminals, no matter how heinous the crimes, to prompt politicians to enact laws that will infringe upon the liberties of responsible citizens who have broken no laws."
"We're restricted and prohibited from enforcing all types of federal laws, including immigration laws," he said Tuesday. "It would be unreasonable for anyone to think that I would enforce a federal firearms law."