A House lawmaker wants to require Syrian and Iraqi refugees to complete lie detector tests before being allowed to enter the country.

Rep. Ken Calvert (R-Calif.) has introduced legislation that would require the Department of Homeland Security (DHS), FBI and Office of the Director of National Intelligence to certify that the refugee has passed a polygraph as part of the screening process for applicants.

...He also wants the three agencies to pledge that a potential refugee has handed over biometric data, including DNA, that would be used to check databases for any previous terrorist activity. The refugees would also need to complete background checks that include searching their Internet postings to determine if they are a threat to national security.

The requirements would apply to both refugees from Iraq and Syria and any applicants who had visited either country since March 2011...