So which Amendment is it that permits subordination of the Constitution to "safety from terrorism?"

[elleng]

73. 'The “general welfare” clause is mentioned twice in the U.S. Constitution,

first, in the preamble and second, it is found in Article 1, Section 8.

The preamble reads: “WE THE PEOPLE of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defense, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America.”

Article 1, Section 8 of the Constitution refers to the “general welfare” thus: “The Congress shall have the Power to lay and collect Taxes, Duties, Imposts and Excises, to pay the Debts and provide for the common defense and general welfare of the United States. . .”

The preamble clearly defines the two major functions of government: (1) ensuring justice, personal freedom, and a free society where individuals are protected from domestic lawbreakers and criminals, and; (2) protecting the people of the United States from foreign aggressors.'

http://www.lawandliberty.org/genwel.htm