[Sherman Logan]

Also still waiting are the Titles of Nobility Amendment (if it hasn't already been ratified already as some claim) which by one reading could strip US citizenship from Colin Powell, George HW Bush and other eminences

Assuming the necessary 25 states or whatever ratified next week, which isn't going to happen, those with existing titles would be unaffected. Ex post facto and all that.

[x]

Ex post facto and all that.

Article One of the Constitution: "No Bill of Attainder or ex post facto Law shall be passed."

If you amend the Constitution, though, it's up to the courts to decide how to interpret the old and the new provisions.