The senator agreed to an interview on the basis of a set of clear andinviolable rules about what she would and would not answer.
“Perhaps M Train represents the attempt by someone whose career is as public as can be imagined to stake out a zone of inviolable privacy, albeit through the public act of writing a book meant for publication.” — Geoffrey O’Brien, The New York Review of Books, 22 Oct. 2015
Addition by me .I looked up the word origin which is here
inviolable
Origin
late Middle English: from French, or from Latin inviolabilis, from in- ‘not’ + violabilis ‘able to be violated’ (from the verb violare ).
How my heart sings 
The senator has things to hide 🙂
They usually do!
In your contry too? So, that´s globalization! Good to know 🙂