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Bill O'Reilly said tonight that he has given up on the Obama administration, as President Obama and many Democrats have simply refused to enforce federal immigration law on everything from sanctuary cities to Syrian refugees.

"We haven't given up on Kate's Law, but I have given up on the Obama administration," O'Reilly said. "I do not believe that the president of the United States is concerned enough about the safety of the American people for me to feel comfortable."

Monica Crowley explained that Obama's stance on immigration is such a problem because it leads to the nexus of illegal immigration, sanctuary cities and national security.

"This is the gravest issue facing the country, because it's about life and death," Crowley said, adding that the Obama administration's failure to enforce immigration law in the wake of the Paris attacks is a "supreme dereliction of duty."

Watch more above.

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