Sen. Marco Rubio has built his presidential campaign around his foreign policy credentials. So why is he now undercutting this reputation by misstating the NSA surveillance reforms passed earlier this year? Two words: Ted Cruz. Sen. Marco Rubio may have framed himself as an expert in national security ,and among the Republican presidential field, he is. But in the wake of the San Bernardino attacks he has been remarkably misleading about American surveillance, even suggesting that those who have tried to rein in the National Security Agency may be responsible for a future terrorist attack. The in-the-weeds nature of NSA...