True, but still no excuse. There is no "Noble Cause" clause in the Constitution and I'd wager the Founding Fathers probably considered and rejected something like it...
“There is no “Noble Cause” clause in the Constitution...”
The Constitution provides for the suspension of Habeas Corpus in Article I, section 9. Congress, not the president certainly has this right and Congress subsequently, legally suspended it once the constitutionality question was raised.