A top White House adviser said Sunday that President Obama still plans to accept 10,000 Syrian refugees even as Republicans insisted that it's all but impossible to stop terrorists from hiding among the migrants. "We're still planning to take in Syrian refugees," Deputy National Security Advisor Ben Rhodes said on "Fox News Sunday." One of the terrorists in Friday's deadly attacks on Paris reportedly may have used a Syrian passport to enter Europe with a flood of refugees, but Mr. Rhodes expressed confidence in the background-check system. "We have very robust vetting procedures for those refugees. It involves our intelligence...