Thomas Jefferson would know what to do with foreign spies, saboteurs and terrorists. Allowing them to function without scrutiny under the guise of civil right is NOT what he would do.
"A strict observance of the written laws is doubtless one of the high duties of a good citizen, but it is not the highest. The laws of necessity, of self-preservation, of saving our country when in danger, are of higher obligation. To lose our country by a scrupulous adherence to written law, would be to lose the law itself, with life, liberty, property and all those who are enjoying them with us; thus absurdly sacrificing the end to the means."
"In all these cases, the unwritten laws of necessity, of self- preservation, and of the public safety, control the written laws of meum and tuum."
press-pubs.uchicago.edu/founders/documents/a2_3s8.html
Thomas Jefferson to John B. Colvin Sept. 20, 1810
http://press-pubs.uchicago.edu/founders/documents/a2_3s8.html