The mass shooting in San Bernardino has not only furthered the discussion of national security but heightens the debate over the expired domestic surveillance program among the 2016 Republican field.

Chief political columnist Byron York and David Drucker consider how the diverging views of Sens. Marco Rubio, R-Fla., and Ted Cruz, R-Texas could help or hurt them as the tragedy has thrust the issue into the national spotlight.

Each Friday, tune in for intelligent updates on politics, policy and the 2016 presidential race with Byron York and Michael Barone. Get smart and stay informed with Byron & Barone.

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